Model of Forza 4 from gamemodels.ru

3d interior
Steering wheel
Dials
Breaking windows

Both extra are from the Forza 4 model:

Extra 2 carbon bumper
Extra 3 Spoiler


YOU NEED THE ADD ON DLC FROM THE RABBIT :

http://www.gtainside.com/en/gta5/cars/81488-volkswagen-rabbit-1986-addon-bmw-m5-e34-v3

or

https://fr.gta5-mods.com/vehicles/volkswagen-rabbit-1986-addon-bmw-m5-e34-v3


Installation in the readme.txt