I am waiting on another pulley for my Procharger so I can get some boost. I am running a 438 low deck stroker. It is a .060 383 with 440 steel crank. I have 6.76 Eagle rods with .990 pins and Diamond flattops. I have a set of Ported Stage VI heads and small hyd roller cam. It is in a 68 Charger street car with 4spd and street tires. I did put a huge A/A intercooler on it also. I will have my pulley by Fri and will know then how it runs. So fat it runs real good with no Boost at all. When it makes Boost it will be a BIG handfull.