Part: Roush axle-back by Borla for Roush rear balance Price: $225 shipped Model year(s): 2005-2010 GT Location: Greenwood, IN I have a set of mufflers, made by Borla, that fit the Roush body kit. These are not the “standard” Roush axle backs for GT Mustangs and will not fit the standard dual-outlet rear bumper. They are p/n 401339, designed to fit the bumper shown in the photo. Unfortunately, I don't have the square tips, but I’m told they can be purchased through Roush (unconfirmed). Let me know if you have any questions.