I have the thunderheader on mine, it sure wakes it up. Also works with forward controls. I agree with the other fellers, those pipes are killing your bottom end. I had 66 torque numbers on mine when i converted it to a 1200. everything else was stock. MY HP was 64. You have the HP #'s......just need the bottom end torque. The dyno run below is 883/1200 conversion...