Here's the ultimate American (including American twins of Japanese companies) car list. Ready?
Acura
01 CL Type-S
03 CL Type-S
99 Integra Type-R
93 Legend Coupe LS
04 MDX Touring
93 NSX
99 NSX-T
04 NSX
05 RSX Type-S
99 SLX
05 TL 6-speed
93 Vigor GS
AMC
70 AMX
83 Concord Wagon
83 Eagle SX/4
75 Gremlin X
71 Javelin
76 Pacer X
70 Rebel Machine
79 Spirit AMX
83 Spirit GT
Buick
89 Century Gran Touring 2dr.
87 GNX
82 Grand National
70 GSX
86 Regal T-Type
04 Park Avenue Ultra
04 Rainier CXL Plus
89 Reatta
63 Riviera
71 Riviera Gran Sport
93 Riviera Gran Touring
99 Riviera SE
83 Skyhawk T-Type
83 Skylark T-Type
54 Wildcat Concept
Cadillac
93 Allante
99 Catera
83 Cimarron
05 CTS-V
02 DeVille DTS
02 Eldorado ETC
99 Escalade
02 Escalade
05 Escalade ESV
05 Escalade EXT
02 Seville STS
06 STS-V
05 XLR-V
Callaway
03 C12
94 Camaro C8
91 Speedster
Chevrolet
86 Astro RS Concept
92 Astro Sport AWD
04 Avalanche Z71 Body Cladding Delete
57 Bel Air Coupe
93 Beretta GTZ
69 Blazer K5
77 Blazer K5
04 Blazer Xtreme
05 Blazer ZR2
90 California Camaro Concept
69 Camaro Yenko SC
69 Camaro Z/28
69 Camaro ZL1
71 Camaro RS/SS
89 Camaro IROC-Z 3dr.
92 Camaro Z/28 Heritage
96 Camaro Z/28
02 Camaro SS
02 Camaro SS 35th Anniversary
89 Cavalier Z24
99 Cavalier Z24
05 Cavalier LS Sport 2dr.
87 Celebrity Eurosport VR
69 Chevelle Yenko SC
70 Chevelle SS454 LS6
71 Chevelle SS454
81 Citation X-11
05 Cobalt SS Supercharged
05 Colorado Xtreme Reg. Cab
89 Corsica LTZ
61 Corvair 95 Pickup
66 Corvair Coupe
54 Corvette
59 Corvette
63 Corvette Sting Ray Split Window
69 Corvette Stingray
78 Corvette Stingray Pace Car
82 Corvette Stingray Collector Edition
93 Corvette ZR-1
96 Corvette Grand Sport
04 Corvette Z06
05 Corvette Z51
05 Corvette Z06
80 K10 Stepside Sport
91 C1500 SS454
70 El Camino SS454 LS6
71 El Camino SS454
79 El Camino SS
02 Express Van LT
05 HHR 2 LT
68 Impala SS 427
96 Impala SS
91 K1500 Fleetside Sport
93 K1500 Sportside Sport
93 Lumina Z34 2dr.
81 LUV
62 Mako Shark Concept
70 Monte Carlo SS 454
79 Monte Carlo SS
87 Monte Carlo SS Aerocoupe
99 Monte Carlo Z34
04 Monte Carlo SS Supercharged
05 Monte Carlo SS
56 Nomad
70 Nova SS
91 S10 Baja Reg. Cab
99 S10 SS Reg. Cab
99 S10 ZR2 Reg. Cab
02 S10 Xtreme Reg. Cab
89 S10 Blazer Sport 2dr.
70 Series II Excalibur
81 Series G20 Nomad
04 Silverado SS
04 Silverado 1500 Z71
04 Silverado 2500 8.1L
04 Silverado 3500 Dually Duramax
66 Suburban
06 Suburban LTZ
99 Tahoe Sport 2dr.
99 Tahoe Z71 4dr.
06 Tahoe SS Concept
02 Tracker ZR2 2dr.
06 Trailblazer SS
05 SSR 6-speed
75 Vega Cosworth
Chrysler
05 300C SRT-8
89 Conquest TSi
05 Crossfire SRT-6
05 Crossfire SRT-6 Convertible
05 GT Cruiser
05 GT Cruiser Convertible
93 LeBaron GTC 2dr.
02 Prowler
04 Sebring Coupe Limited
DeLorean
04 DMC-12
Dodge
65 A100
77 Aspen R/T Super Pak
78 Aspen Super Coupe
99 Avenger ES
66 Charger
70 Charger 440 R/T
71 Charger 426 Hemi R/T
87 Charger Shelby GLH-S
05 Charger Daytona R/T
05 Charger SRT-8
70 Challenger T/A
83 Challenger
70 Coronet R/T
89 Dakota Shelby
02 Dakota R/T
69 Daytona Charger
89 Daytona Shelby
93 Daytona IROC R/T
02 Durango R/T
02 Intrepid R/T
79 Lil Red Express
05 Magnum SRT-8
99 Neon R/T
05 Neon SRT-4
86 Omni Shelby GLH-S
05 Power Ram
85 Ramcharger
82 Rampage 2.2
99 Ram Super Sport
02 Ram 3500 Dually Cummins
05 Ram SRT-10 Regular Cab
85 Ram Van Custom
89 Raider
93 Shadow ES 3dr.
91 Spirit R/T
93 Stealth R/T Turbo
04 Stratus R/T Coupe
69 Superbee R/T
00 Viper GTS-R Concept
02 Viper RT/10
02 Viper GTS
04 Viper SRT-10 Convertible
06 Viper SRT-10 Coupe
Eagle
91 Premier ES Limited
93 Talon TSi AWD
99 Talon TSi AWD
Ford
93 Aerostar Ext. Sport
89 Bronco II XL Sport
76 Cobra II
99 Contour SVT
02 Crown Victoria LX Sport
82 Econoline Custom
89 Escort GT
83 EXP
93 Explorer Sport 3dr.
99 Explorer Sport 2dr.
06 Explorer Sport Trac Concept
02 F-150 Harley Davidson Edition
04 F-150 SVT Lightning
04 F-150 STX
05 F-250 Harley Davidson Edition Ext. Cab
05 F-350 Sport Dually Crew Cab
06 F-150 SVT Lightning Concept
67 Fairlane 427
83 Fairmont Futura Coupe
93 Festiva GL
03 Focus SVT
68 Galaxie 500
72 Grand Torino Sport
67 GT40
95 GT90 Concept
02 GT Concept
05 GT
76 Maverick Stallion
69 Mustang Boss 302
69 Mustang Boss 429
71 Mustang Boss 351
73 Mustang Mach 1
76 Mustang II Stallion
93 Mustang GT 3dr.
99 Mustang Cobra
99 Mustang Roush
00 Mustang Cobra R
04 Mustang Mach 1
04 Mustang SVT Cobra
76 Pinto Hatchback Stallion
77 Pinto Wagon w/Cruising option
93 Probe GT
99 Ranger Splash Reg. Cab
86 RS200
92 Sapphire Cosworth
92 Sierra RS Cosworth
88 Splash Concept
89 Taurus SHO 5-Speed
99 Taurus SHO
83 Thunderbird Super Coupe
89 Thunderbird Super Coupe
04 Thunderbird Pacific Coast Roadster
69 Torino Talladega
70 Torino Cobra
03 ZX2
Geo
93 Metro LSi 3dr.
92 Storm GSi 3dr.
93 Storm GSi 2+2
93 Tracker 3dr. LSi
GMC
05 Canyon Z71
91 Syclone
05 Envoy Denali
78 Jimmy High Sierra
93 Jimmy SLS 2dr.
93 Safari SLE GT AWD
02 Savana SLT
94 Sierra GT
02 Sierra Denali
92 Typhoon
91 Vandura Custom
95 Yukon GT 2dr.
04 Yukon Denali AWD
04 Yukon XL Denali AWD
Hummer
05 H1 Alpha
05 H2 SUV
05 H2 SUT
05 H3 5-speed
Infiniti
05 FX45
93 G20
99 G20 Touring
04 G35 Coupe
04 G35 Sedan
04 M45
04 QX56
International
72 Scout II
79 Scout SSII
Jeep
97 Casablanca Concept
81 Cherokee Chief 2dr.
84 Cherokee Chief 2dr.
93 Cherokee Sport 2dr.
88 Comanche Chief
77 CJ-7
85 Freedom Concept
99 Grand Cherokee Limited
03 Grand Cherokee Overland
06 Grand Cherokee SRT-8
76 J10 Golden Eagle
98 Jeepster Concept
05 Liberty Renegade
82 Scrambler
87 Thunderchief Concept
62 Willys Wagon
93 Wrangler Renegade
05 Wrangler Rubicon
05 Wrangler Rubicon Unlimited
Lexus
99 GS 300
99 GS 430
04 GX470
03 IS 300 Sedan
03 IS 300 SportCross
04 LX 470
05 RX 400h
93 SC 400
99 SC 400
04 SC 430
Lincoln
04 Aviator
95 L2K Concept
04 LS V8 Sport
88 Machete Concept
06 Mark LT
89 Mark VI
93 Mark VII LSC
04 Navigator Ultimate
Mercury
83 Capri RS
93 Capri XR2
68 Cougar GT-E
70 Cougar Eliminator
89 Cougar XR7
03 Cougar XR Feature Car
70 Cyclone Spoiler
83 LN7 RS
03 Marauder
93 Tracer LTS
83 Zephyr Z-7 GS
Merkur
89 Scorpio
89 XR4Ti
Oldsmobile
68 4-4-2
72 4-4-2 W-30
93 Achieva SCX
02 Alero GL2 2dr. 5-speed
02 Aurora V8
93 Bravada
83 Cutlass Calais Hurst/Olds
70 Cutlass Rallye 350
93 Cutlass Supreme I Series 2dr.
02 Intrigue GLS
75 Starfire GT
66 Toronado
89 Trofeo
Plymouth
71 Duster 340
93 Colt GL 2dr.
58 Fury
70 Hemi Cuda
93 Laser RS Turbo AWD
70 Road Runner
93 Sundance Duster 3dr.
70 Superbird
83 Turismo 2.2
Pontiac
83 6000 STE
88 Banshee Concept
89 Bonneville SSE
93 Bonneville SSEi
05 Bonneville GXP
77 Can Am
80 Firebird Turbo T/A
88 Fiero Formula
89 Firebird Trans Am GTA
99 Firebird Trans Am WS6 Ram Air
02 Firebird SLP Firehawk
06 G6 GTP Coupe
06 G6 Convertible
89 Grand Am SE 2dr.
93 Grand Am GT 2dr.
05 Grand Am GT 2dr.
88 Grand Prix McLaren Turbo
94 Grand Prix GTP
05 Grand Prix GXP
64 GTO
66 GTO
69 GTO Judge
71 GTO Judge
05 GTO
83 Phoenix SJ 2dr.
04 Solstice Concept
06 Solstice
89 Sunbird GT
99 Sunfire GT
69 Trans Am
74 Trans Am SD455
79 Trans Am Anniversary
89 Trans Am Turbo
05 Vibe GT
Saleen
98 Explorer
89 Mustang SSC
95 Mustang S351
05 Mustang
05 S7
Saturn
05 Ion Red Line
93 SC2 Coupe
05 Vue Red Line AWD
Scion
05 tC
04 xA
04 xB
Shelby
65 Cobra 427
66 GT350
67 GT500
06 GT500
01 Series 1
Vector
92 W8-M12