I had a calculator for this type of thing before but I cant seem to find it. My fuels system consists of FRPP 36# injectors, a walboro GSS340 intank pump(255 lph) a Kirban AFPR and I guess ill throw in that I have a tweecer as well(I think you can do something injector wise with it, sorry for me being a newb). If I remember correctly, im gonna be maxing these things out soon. I have a Vortech S-trim putting out about 11 psi, Trickflow heads, trick flow stage 1 cam on a rebuilt stock shortblock. Im hoping for ~450 hp which shouldnt be a problem. Will my 36r's be good or should I upgrade? My freind is gonna be selling a Pro M 77 mm MAF and 42# injectors soon and I could probably get that for cheap and then sell my maf (75 MM Pro-M) and my injectors. How much power are the 42's good for? I think im done with the HP bug for a while now, unless I get a meth inj. kit. I need to start saving for a place to stay and then upgrade my tranny/suspension.