So I'm cheap and wasn't paying a lot of money for a cross over and tips, so I modified the factory header pipes, cutting 1.5" on the rear cylinder and 4" on the front cylinder. I went to my local Oriellys and bought two 90' 1-3/4' pipes, one 3', and one 24" pipe and made a crossover, I bought some Harley screaming eagle slip-ons and staggered them one on top of the other. No rejet, no tuning. Runs perfect. Welded it all up and painted them with high temp "crinkle" paint. Total spent, $29 at Oriellys, $75 on used slip ons, and all I have left to do it make a hanger... looks great. Sounds great. Even calms down the popping(I've yet to marble) anywho, if you guys want some pics of this build give me an email and ill send you the pics from start to finish. I can't post on here my phone wont let me, but if I emailed the pictures to someone I would love to see them up here.