Can I use an Arias shelf a fuel piston in a screw blown motor? 4.375x 3.600, Brad -5, D rotor, 39.5cc dome works out to be 11.5:1 with piston down .020 and a .050 gasket. 1.156 pins and pro coated. They seem kind of heavy at 890grams.... I'd like to turn it around 9800 through the lights with a two speed and converter in a 2650lb door car.