Turbosmart dual port bov (will consider other bovs, thats just my first choice)
ADP air diversion panel
3" exhaust, full or in pieces (downpipe back)
gt25 exhaust manifold
4 point ladder brace
You can always get an ebay FMIC kit and order a pipe with any type of flange you need, most people do as nobody makes them for our cars and when they did they were $750+.
Hey man, I have the exhaust you need. Full three inch custom setup for a p5. Pm me your email or cell and I Can send pics. I ran this setup with a pope downpipe