You misunderstand me. I completely agree with the 904 when it's based on a 790 engine; it's the performance gain to an 865 that doesn't seem to make as much difference for the amount of money invested. That's why I suggested cams and ports for the 856...more bang for the buck. Now a stroker kit in that 865 would probably offer as much gain as a 904 does to a 790 but that wasn't the question. As for me, I have a 790 and the 904 looks like it would be a great improvement for my engine, even better with a ported head and larger valves!
