So I was thinking of making my own straight exhaust, because I dont like these dual setups, plus I want it LOUD its better being a straight pipe like the alta setup. So I figured hey, I'll do the oneball mod but instead of reusing one stock muffler, I'll replace that with a different muffler, like a Borla xr-1 race muffler or something. Has anyone else done this? What size is that piping? If you have done this what mufflers or resonators have you gone with?