any suggestions to upgrade 85' 4000s?

 

whay do you mean upgrade .... turbo swap ?

 

anything in general to give it some more *****. maybe a new performance chip or something. i thaught about putting a supercharger in it but i think that might be too much for the engine to handle. there is just so much room in the engine bay with it not being a turbo and not having quattro

 

the stock engine can handle 400hp easy