The tune would have done more than all 5 of those. I tuned my neighbor's 6.0 ex cab short bed 4.10 2500HD 265 tires. Before the tune, he was about dead nuts even with my 98 K1500 ex cab short bed 5.7/4L80/4.10, long tubes/exhaust, 285 tires, tuned 411 computer swap. My shift kit seemed the only thing that gained me any ground. After I reflashed his otherwise BONE STOCK truck, he fvckin *ss raped me. Bad. I've since added a Whipple and marine intake, can't be losing like that. Those trucks have a 60 second delay for the overly rich WOT fueling to come on and are just begging for gobs of timing, especially down low. Blackbear does solid mail order tunes, if you're game for it I highly recommend doing it. The truck won't downshift for a hill or require as much throttle to just putt around. I also monkeyed with his electronic throttle response table. Lots of low hanging fruit in those truck tunes.