I just got back from the drag strip, on an 05, 5 inch lift 37's quad cab 4x4, weighs right at 7800 lbs, with all the junk in it. These turbos, 75 horse sticks Smarty on 9 and MP8 turned up, I ran an 8.30, that is right at a 13.00 flat. With less weight and bigger sticks, a low 12 should be easy. I am also near 4,000' elevation. Don't ask me what the pyro showed (too busy driving), but from long runs on the street, it just touches 1400.
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02 2500 Sport SB 3850, DRAG COMP, 2 TURBOS, BIG STIX, BIG PUMP, STUDS, SPRINGS, CAM, WATER INJ, ARB AIR LOCKERS, O RINGS, LIFT 35'S
05 2500 Sport 2 TURBOS, CAM, SPRINGS, STUDS, BIG STICKS, DRAGONSLAYER CP3, C5 MP8 AND PROGRAMMER, BILLET TRANNY, LIFT 37'S