OBX are stainless, mandrel bent tubes. Pacesetter are painted, mild steel. The Pacesetter's will rust, the OBX never will. Both require some modifying, but I personally prefer the OBX, I have them now. One of the sponsors sells the OBX already modified, I think its horsepowerfreaks, but not sure. Oh yeah, 2.5" all the way back, cat delete, 24" magnaflow glass pack just before the rear wheels, and a 2 chamber Flow on the end. Quiet on idle and low throttle, louder, but not blaring, at WOT. I doubt my 0-60 is as slow as 8 sec.