Go to Summit racing or Jeggs and get a Catco universal high flow converter..REALLY cheep! That is what I have on my NX ( i'm almost 100% positive I got a 14" long converter...2.5" diameter I think). Unfortunately, the size and flange setup on our converters are strange ( 12.5" long, and the flanges are turned 44 degrees or something like that). Alex '93 NX2k '92 G20