Okay I did some searching and had the HKS on my last SE-R,but haven't seen any cat back systems for the NX.Does anyone make them?:confused:

No. But you could make one with a Stromung B pipe and a Borla(if they still make them) a Sebring or a Remus muffler. It will be a 2" straight thru. Or get the Courtesy B pipe with a 2 1/4" muffler. Thats should net you some nice top end.
Type R guys put a 2 1/2 B pipe with their stock/aftermarket mufflers. I don't know why but it seems to work for them.

Well looks like I pay a visit to the muffler shop.Im thinking maybe a 2 1/4 midpipe to a magnaflo resonator and muff.I have a Magnaflo cat back on my ZX3 and love it. It was only 260 bucks delivered.I will be lucky if I can have a system made for 500.Thanks for the response.

I think HotShot was in the process of protyping one. Tom Paule told me this a while back. I don't know what ever came of the effort.