cheers mate i am looking in there but jesus its 10 pages long(OMG) lol
Keep watching though because i may actually be able to figure it out.
UPDATE:
i found this information while looking at the GTA3 Pc version and i have successfully driven the RCBANDIT on the PC version of GTA3 now alls we need to do is get it available on PSP using Carters new cheat add-on
Here's how to make it.
Open the "default.ide" in your GTA3 data folder (ex. C:gamesGTAIIIdata). You can open it with notepad. Scroll down to the vehicles section. Find car number "95" (Sentinel) and change the number to "131". Now, scroll down to another car with number "131" (RCBandit). Change that number to "95". Save the file and close it. The Sentinel and the RC Bandit is swapped. That means that all the Sentinels in the game are now RC Bandits and the RC Bandits are now Sentinels. We are not done yet! Before you can drive the RC Bandit you will have to make GTA 3 think that the RC Bandit hasn't got any doors. By default GTA 3 thinks that the RC Bandit has doors and when you enter the car the game can't find any "door-animation" wich causes the game to crash. If you have a car stat editor you can activate the "NO_DOORS" in the "Flags" menu. I had some problems with this. It seemed like the flag didn't work. If it doesn't work you can open the "handling.cfg" also located in the GTA3 "data" folder. Find the RCBANDIT line and replace it with this line:
RCBANDIT 1500.0 0.8 1.5 1.0 0.0 0.0 -0.1 70 2.0 1.0 0.47 5 150.0 35.0 4 P 10.5 0.53 1 10.0 1.6 0.1 0.2 0.0 50000 0.25 -0.09 0.5 B010 1 1
Then save and close the file. It should work now. Enjoy!
1 x White PSP Value + V1.50 & GTA, TonyHawks, 1GB, NFS:BOTH, Midnight Club 3.
2 x Black Giga & Value 1 - V2.01, the other V2.60, 2 x 512MB, 1GB, 2 x 32Mb.