I just installed mine a week or 2 ago. If you're not looking for a major change in sound, the magnaflow will be good - louder than stock, but not too loud (plus you will gain some hp). Part# 15889 is the 4.0 axleback. Also, I would recommend you get someone to install it...I tried to, but the clamp that holds the 2 pipes together kept slipping off. I got a shop to do it for $40 and they used a new clamp.
__________________ 2007 Mustang V6 Pony Package, GT takeoff wheels, C&L CAI, XCal2 tune, single Magnaflow axleback |