Simple request

[Dr.Dbl-Gee]

Its so simple but yet so hard for me. All i need is to put a supercharger motor onto this model. Im planning to make a Tarkers Sabre and all i gotta do is put a motor from a diablo stallion which i have a dff of onto the model of the sabreturbo and i can retexture it. ITS THAT SIMPLE BUT I CANT DO IT! PLEASE HELP ME OUT!! its going to be a gang car i gues

Please if you know how to model on 3DS Max, help me.