hey guys, i have a 2007 xrs... it has a few goodies on it but i would like it louder, has the slp can and its seems very heavy for what it is. so i have an idea to build my own ( i am looking for a J star thats used if i can find one) or like i said build my own, now my idea is to use a aftermarket slip on from a crotch rocket, yamaha R6, its aluminum on the exit end and carbon fiber mid section with a stainless inlet. its a striaght threw core with a diameter close to 2" 1 3/4-1 7/8 i think. this can is long since it was a high mount style exhaust. i was planning on cutting it down around the 8" in length so it can stand vertical like the slp dose. but my question is: will the 8" of length be enough with a core diameter of this size? or will it restrict to much? any help would be great. i dont feel like playing with jetting and i am no expert so i thought i would ask here.