I need to replace the exhaust on my 1994 BMW 318is, and if I am going to spend the money doing this I want to buy a performance exhaust. I have looked through a lot of the brands and am having a hard time finding one that is going to fit.

Does anyone know where I could find one, or any alternative I have to buying one online? I am not looking to dish out a lot of extra cash on this, but any help would be greatly appreciated.