taco eater :
Don Roush from Kansas City, KS United States
unable to find an original 2hp high torque head for the polini, i settled on this. no more pinging, much smoother, quieter, cooler, still plenty of compression. i used the copper gasket that DOES NOT cover the decomp hole all the way, it covers about half, so i used copper sealant and no leak yet. not sure if this even needs a gasket. If anyone could clarify that i would appreciate it! my temps are still kinda high but that could be many other factors. Def worth the price and has saved my build!!