Don't worry about the muffler touching the bars, it won't. You need to be looking at the distance between the top of the bars and the bottom of the outlet pipes. I run the Bassani Nastruck exhaust now and fits perfect. BTW those were my first attempt at a custom exhaust, Aerochambers. Those mufflers flow no doubt about it, but along with that , there was a cab resonance that I couldnt live with right now. In my younger years it would of been perfect. Funny thing now though, my Bassani system is getting louder and only been on a couple of months.
Later Steve