gtasa/data/handling.cfg
BUFFALO      1700.0    3100.0   2.7    0.0 0.3 -0.15 85 0.78 0.85 0.5       5 205.0 35.0 6.0  4 P   10.0  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
402, 	buffalo, 	buffalo, 	car, 		BUFFALO, 	BUFFALO, 	null,	executive, 	7, 	0,	0,		-1, 0.80, 0.80,		1

gtasa/data/carmods.dat
buffalo, exh_a_u, exh_c_u, fbmp_a_u, fbmp_c_u, nto_b_l, nto_b_s, nto_b_tw, rf_a_u, rf_c_u, spl_a_u_b, spl_c_u_b, wg_l_a_u, wg_l_c_u

uranus, nto_b_l, nto_b_s, nto_b_tw

gtasa/data/carcols.dat
buffalo, 1,0, 2,0, 3,0, 45,0, 49,0

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