Hey gus. I have this 325is; shes a good car, but im sure she can be better with a nice m3 engine dropped into it.
Now, ive been trying my best to do some research into what ill need to do this. The first, and most obvious thing is the engine. Second, i have been looking at some nice 6speed tranny's for it. Heck, why not 6 speeds, eh? I know ill need an ECU and i hope i get the wiring harness with the engine, if not, im sure i can aquire one.
Now, with all that in check, im wondering if i am missing anything else to complete the installation.

Thanks for your reply.
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