i have already trimmed the mud flap part of my fender flares to gain that clearance in the rear. ive been thinking of cutting my tail pipe back about a 1-1.5 ft in order to gain clearance.i have already hit the exit a little and dont want to damage/bend farther upstream. ill probably make a new hanger to stabilize it since the old hanger will be cut off. but my question is has anyone done this mod and noticed a difference with exhaust fumes entering through the back window. any info would be great thanks.