Just out of curiosity, what would i have to modify (or not) to make a supercharger work in my 1990 quattro V8?

from what i understand turning a audi v8 quattro into a supercharged or turbo is more trouble than the actual increase in performance would be worth

its not trouble, its just requires a bit of engenering. I have made one for my self, all I need to do is to install now, and tune a bit.

I can give pointers if you want.