Im sure all hes got is silverado 1500 V6, hes just jealous, he thought he got a good deal because he bought it employee price (sorry bud, you got drilled), I read his profile and its states that hes running (dual) 5' magnaflows on his duramax
good luck if you even move that rig that way its supposed to run, go back to your hole and stay there
stay out of our forum, if you dont have anything constructive to say.