gtasa/data/handling.cfg
CHEETAH      1700.0    3100.0   2.7    0.0 0.3 -0.15 85 0.78 0.85 0.5       5 205.0 50.0 6.0  4 P   40.0  0.52 0 35.0   1.19 0.19  0.0   0.28 -0.10 0.5  0.3        0.16 0.70 100000    40002004    4000001     1  1    1

gtasa/data/vehicles.ide
415, 	cheetah, 	cheetah, 	car, 		CHEETAH, 	CHEETAH, 	null,	executive, 	7, 	0,	0,		-1, 0.80, 0.864,		1

gtasa/data/carmods.dat
cheetah, nto_b_l, nto_b_s, nto_b_tw

gtasa/data/carcols.dat
cheetah, 49,0, 45,1, 3,1, 29,1, 16,0, 0,3, 3,0, 0,16, 1,3

get that mod car colors make your game more cool ;)
http://www.gtainside.com/en/sanandreas/mods/86342-car-colors-mod/