Im looking at ZZP and would like to look into a down pipe.

At there site they have about 10 dif selections:

http://www.zzperformance.com/grand_p...=551&catid=110

Im pretty sure you guys recommend a 3 inch down pipe. Which one do I need? I would like to keep my cats. Also ZZP looks expensive. Anywhere else that I can get a 3 inch down pipe for a little cheaper?

BTW 01 GTP...

Thanks!