Well I joined this forum because a lot of my google questions for diesels land me here. I have two duramax trucks. They are both 2004 crew cabs. One is a LB7, the other is a LLY. The SRW has just about everything done that can be done to a dmax truck, and the DRW is my tow rig. The red one is down right now with two bad injectors. It's getting a built engine next month. I just bought the black one last week. It had 5" exhaust, intake and an EFI live tow tune in it a few hours after I got it home. American Force 19.5's will be on it by next week, and a Cognito 4" kit with bags in the rear will be on it by the end of the month.