I have a 388 sbc motor with all forged internals and the lower end kit is rated for up to 800 ho and 8000 rpm's. Best pass last year was a 12.57 @109mph and that was with transmission issues..I have since fixed the transmission issue, still have to take it to the track..Hopefully this weds or fri. Anyways, I was thinking of a NOS 100 or 150 shot..what would be the best set up to get..Will a I need a different fuel pump instead of my eddy mechanical????? HOw much difference would I see in ET? I am currently running with the timing at 37degrees as that's where it dynoed the best. It is a street/strip car.