Ok, first off, i'm sorry but i'm new to Porsche.
I've already got the factory sport exhaust, (on my 2002 C2) Would I benifit more from the x-pipe or header? Or possibly both? Will these bolt up direclty to the sport exhaust?
Thanks guys.

 

I also would like to put on the 2003 Carrera or the cat fabspeed with 200 cells, or cat bypass, what do you recommend? I would leave the original headers and silencers for not having a sound too loud but more metallic. If I put the cat bypass turns some spy probe?

 

I have the Fabspeed headers and mufflers and I am considering the cross pipes. Does anyone know how much loader the car is with this combination vs stock cats?