Im the said friend of CGD. my truck is a true freak, i need to find out if they did something odd to early dmaxs. all my production stickers are 9/00 and if memory serves me right they didnt start building then till 8/00. so id like to know what number motor built mine is. all thats dont to motor is head studs stock lly cp3. big head, rdl horn, afe tube, bd manifold. duramaxtuner does my tuning, couldnt be happier. i just made 540 on a super flo 2 weeks ago, but had a ses light on for something 4wd related and is currently at the trans driveline shop getting figured out.