Hi, I have an e30 325iC and have done the following to the engine: Performance Chip K & N Cone Filter Lol that is it. Basically I am looking to get a new exhaust, and I would like to know where I could get a good turbo/supercharger for this model. Its a '91. I have strut and sway bars, new wheels, tires, hella headlights, all that physcal appearance, but i would like to gain some more HP. I checked out karmon, but that shit was expensive as hell.