2008 4.8 ext cab. just installed a slp LM2 and dumped it at the axal. F'ing sweet sounding. deep, no rasp, crisp and clean. sounds like a stock fbody with full exaust. ill get a clip up soon. this is a great and cheap system. 95 for the slp and 35 to have it installed and dumped. 130 bux aint bad at all for this sound. its quiet at idle but noticable, deep and moderate at cruising and street use, screams but still deep at wot.