My brother in law just had a Pacesetter exhaust installed on his Expy yesterday. I drove it last night and it sounded pretty good..not too loud. Cannot comment on performance enhancement. I have seen Pacesetter exhaust, but have not seen or heard on anyone installing one on an F150. Seems that their warranty is only 3 years, which gives me pause. He paid about $270 plus $80 for installation. Has anyone installed a Pacesetter on an F150, or perhaps offer any comments (good or bad) regarding the quality, etc. of this system. Thanks in advance.