INstall
Put 
the supergt.txd supergt1.txd supergt2.txd and the supergt.dff in gta3.img
If you tune it , it doesnt crash
If you want that it look like a rally car , than you must go on the paintjobs at transfenders its a tunning shop for cars.
This is a mod by BiG Gian dont host it without my permission
www.big-gian.de.tl