The Stinger comes with 2 extras...
1- Regular (Convertible)
2- extra1 (Roof Rails thing)
3- extra2 (Soft Top)

Also comes with 2 versions...
1- Version without coustom wheels.
2- Version With Custom Wheels. (YOU HAVE TO INSTALL Dmagic1 WHEEL MOD IN ORDER TO WORK)

INSTALLATION...

1) open gta3.img and replace "stinger.dff" "stinger.txd" with the new one.

Some notes:

A) to make it simple download GGMM and go to "Installer" and go to "manual mod installer" then insert dff txd and col Link for GGMM: https://www.gtagarage.com/mods/show.php?id=434

B) or use modloader :P

YOU have many MANY choices to replace the dff and txd.

2) (FOR THE CUSTOM WHEELS VERSION) open default.ide and replace stinger line with the new one:

NEW LINES:

132, 	stinger, 	stinger, 	car, 	STINGER, 	STINGER, 		null,	executive, 	10, 	6,	2ff0,		249, 0.7

3) Open handling.cfg and replace stinger line with the new one:

NEW LINES:

STINGER         1400.0 1.9 4.7 1.5 0.0 0.0 -0.30 85  1.2  0.85 0.52 5 200.0 28.0 R P 11.0  0.45 0 30.0  1.8  0.20 0.25 0.50 35000 0.28 -0.15 0.5  0.4		A182		1  1

This new handling line fixes the Stinger drivetrain (From Front Wheel Drive to Rear Wheel Drive) and also fixing the seating animtaion.

4) Open carcols.dat and replace stinger line with the new one:

NEW LINES:

stinger, 5,90, 6,70, 10,80, 35,71, 33,91, 8,71, 2,70, 3,1