I'm looking at the cam they used and thinking in a 383 with that cam a single planes gonna make the top of the list. Where do you guys think the peak RPM/horsepowers gonna fall with that combo? Driveability and average #s might well be with the Perf. RPM, but I would think the M1 or Weiand single planes got an advantage peak wise over even the RPM. Don't know a thing about the Victor for 383, but if the one I ran on my sb Chevy years back is an indicator, the Victor likes it way up rpm wise over most all those other intakes. Might be a bit much for that setup.