Care to share which one of your builds you did this with? I have suspected a lot of what we read and hear about the great single plane vs two plane debate has more to do with what people are really willing to put up with in a "street car" or at least what they think they can. I know on the track once you get to a certain level of camshaft/compression/gearing that a single plane will yield better results, most people just don't get anywhere close to it with a street build though.