Replace any car you want with these lines, for an example if you want to replace the Rancher change the CAR ID with "489" and "cruiser" to "rancher".
You should know these things by now, if you don't just go watch a 10 year old GTA SA car mod install tutorial!!

handling.cfg

CRUISER     2000.0    4000.0   2.2    0.0 0.0 -0.6  80  0.75 0.85 0.5  	5 170.0 28.0 10.0 4 P 	8.0   0.50 0 30.0  	0.8  0.08  0.0   0.35 -0.31 0.5  0.0		0.38 0.35 40000 	0			310000		0  1	22

vehicles.ide

[CAR ID],	cruiser, 	cruiser, 	car, 		CRUISER, 	CRUISER, 	null,	ignore, 	4,	0,	0,		-1, 0.972, 0.972,		-1

Original model taken from GTA 3 Xbox edition - credits to Rockstar

Convertion and SA adaptation - Stierlitz/cowdidnothingwrong

Anyone has permission to use my mods for whatever they would like. 
Upload them on sketchy Russian mod sites, add them to your super mega mod-pack, share them to your friends, show them to your grandmother... 
Its all good. Heck, you don't even have to credit me, although it would be nice of you.

A-C-R †