pick an org...USACi,dbDrag or what? the blowthrough puts you with the big boys in USACi unless you're doing streetbeat.I'm really leaning toward doing 3 LIs off an aq 2200D, I don't do anything upwards of 16v and its almost half the price. The 20.1 IS a sexy amp though, no doubt. I'm wanting to start entering my truck in some local db comps, but know nothing about what class I'd be in, could you guys help me? It would be an 03 ex cab silverado with a blow through(coming) , stock alt (for now) yellow top under the hood.