Ok, here ya go, buying the Spoon S2000:
D01C33CO D5D8
801C32DC D758
D01C33CO D5D8
801C32DE 120D
Ok, you see those codes that start with "DO"? ignore those when you're changing what car you are buying. Instead, look at the two codes that start with "80":
801C32DC D758
801C32DE 120D
Now, here's how the body codes for the Spoon S2000 are listed (
http://www.rogs.dial.pipex.com/carsb.htm ):
D758 120D
Now, look closely at the codes for the body and the codes that let you buy the car. See how it works?
In case you don't, this is how you would fix it to let you buy the Shelby GT500 KR (hidden, basically the GT500 with a different name, though it's handling seems a little better to me):
body code for GT500 KR: 6058 1F74
codes for buying the car at tommy kaira:
D01C33CO D5D8
801C32DC
D01C33CO D5D8
801C32DE
See, you put the 6058 after the first "80" code, and you put the 1F74 after the 2nd "80" code, like this:
D01C33CO D5D8
801C32DC 6058
D01C33CO D5D8
801C32DE 1F74
Just change the same part of the code whenever you want to buy another prize car or hidden car. But be sure you enter it right, because if you don't, your game will freeze when you try to look at the car to buy it. Also, once you do succesfully buy the car, save your game and restart without the codes on, or you game may freeze. Basically, only use these codes as long as you have too, not longer.
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Here's some body codes for some prize/rare cars:
30th Anniv. Camaro: 4058 0D00
Dodge Concept Car: A49C 0E35
Dodge Concept Car LM: A49C 0E01
STP Taisan Viper: E81C 0E0D
Ford GT90: A058 1F40
Del Sol LM: F71C 1200
Stratos: D798 1359
FTO LM: E65C 1701
Impreza 22b: 30D8 1D0C
ZZ-II: 40D8 150E
Cerbera LM: C31C 2001
Speed 12: 20D8 2074