I was running an O/R X pipe with Pype Bombs and the trumpeting was pretty awful (way too loud). I installed m80s and the car sounds amazing (09 gt). Spend the 90 bucks and buy em' new when AM gets them back in stock. You won't regret it.
2009 Mustang GT Premium; FRRP 4.10 Gears, J&M Lower Control Arms, BBK Long Tube Headers, BBK Catted X Pipe, Pypes M80 Mid Mufflers, Pypes Pype Bomb Axle Back, JLT Series 3 Cold Air Intake, Bama 93 Octane Race Tune, Black Decklid Panel, Weathertech Mats, SVE Shifter and Shorty Antenna.