Those 204 dvs seem a little large, you could go with a set of 181's or 191's. That may help some too. Ive seen some people make some big power with 181's even
__________________
1996 2500 4x4, HX35+HT60,#10 Full Forward, 3000 GSK, 18*, DDP 191's,5x.012's, Modified AFC,5" Hood Stack, Home Made Traction Bars,Autometer Ultra Lite II Gauges,Auto to Manual,Valair 12 1/4" 3800# Ceramic, 3.54:1 Gears.