I thought, why no make a list of cars that can use those race mods and body kits from the GT Auto shop.
Lamborghini Gallardo:
body kit: front yes, side no, back yes, spoiler yes
no race mods
Ferrari California:
body kit: front yes, side no, back no, spoiler yes
no race mods
and here is a list going around in the forum aswell, focused on the race mods
Acura NSX RM '91
Chevrolet Camaro SS RM '10
Chevrolet Camaro Z28 RM '69
Chevrolet Corvette Z06 (C6) RM '06
Chevrolet Corvette ZR1 (C6) RM '09
Dodge Challenger R/T RM '70
Honda CIVIC TYPE R (EK) RM '97
Honda INTEGRA TYPE R (DC5) RM '04
Lexus IS F RM '07
Lotus Elise RM '96
Lotus Elise 111R RM '04
Mitsubishi Lancer Evolution IX GSR RM '05
Nissan SILVIA spec-R AERO (S15) RM '02
Subaru IMPREZA Sedan WRX STI spec C Type RA RM '05
Suzuki Cappuccino (EA21R) RM '95
TVR Tuscan Speed 6 RM '00
Volkswagen Golf IV GTI RM '01
Lamborghini Gallardo:
body kit: front yes, side no, back yes, spoiler yes
no race mods
Ferrari California:
body kit: front yes, side no, back no, spoiler yes
no race mods
and here is a list going around in the forum aswell, focused on the race mods
Acura NSX RM '91
Chevrolet Camaro SS RM '10
Chevrolet Camaro Z28 RM '69
Chevrolet Corvette Z06 (C6) RM '06
Chevrolet Corvette ZR1 (C6) RM '09
Dodge Challenger R/T RM '70
Honda CIVIC TYPE R (EK) RM '97
Honda INTEGRA TYPE R (DC5) RM '04
Lexus IS F RM '07
Lotus Elise RM '96
Lotus Elise 111R RM '04
Mitsubishi Lancer Evolution IX GSR RM '05
Nissan SILVIA spec-R AERO (S15) RM '02
Subaru IMPREZA Sedan WRX STI spec C Type RA RM '05
Suzuki Cappuccino (EA21R) RM '95
TVR Tuscan Speed 6 RM '00
Volkswagen Golf IV GTI RM '01