i have a set of REALLY nice Jardine 4into2 pipes for an early (spigot mount) 750 and i'm going to mount them up on the wrecked k6 frame/blown f0 motor and see if i cant take the headpipes and make my own 4 into 4 exhaust. it HAS to be cheaper to do it that way rather than spending 1000+ dollars on a pre made exhaust. IF it goes right, i'll be selling a kerker header and supertrapp muffler. pics to follow later today.