2004 4x4 silverado ccsb 2500 non hd. I haven't had it at a track yet. So far tvs1900,ls9 cam,airaid intake, 90mm throttle body, 10 psi boost with 3" pulley. This spring I'll be getting long tube ARH headers, 60 psi injectors and 4.56 gears. It's a big heavy truck, but i just wondering how close you guys think i could get to 12's with this set up. Thanks, Dave.