Keep at it guys, make one improvement at a time so that you can tell what works best for your truck. Racing technique has a lot to do with your overall performance. With exhaust, air intake and good tuning, you can put most of these trucks in the low 13's, some 12's. Stock aluminums, 265's, HD tierods, clamp the front half of your rear springs, tow/haul mode, boosted launch in 4wd. If youre just looking for a good time, dont stress about cutting a good light, at least in the begining. Let the trans shift itself. It may take a few runs for the trans to "learn" what youre up to. You will surprise a lot of people.