any 1/4 geusses I run 13.4 now with only 228whp265trq thru my 3800stalled auto. I dont know what to think almost all manuals I see with my power range i'll have only run high 12's kinda depressing for 350+whp??? but some say I should see better with the stall.

 

just choose whatever supercharger you want, whether its vortec, procharger, kenne bell or w/e, run 8-12#s of boost with a good tune, reach 400+rwhp, have fun. don't worry bout your stock block as long as you got your tune from a reputable tuner.