Vintage racing is like that, no aftermarket parts, make it yourself but that's half the fun! The other half is when it works. The V type actually works better for my application. It's the size differences that worry me. Driving off the front of the crank, Potvin style has it's own set of problems and virtues. One ratio, the size of the blower determines the boost, all things being equal. Helps with the harmonics.
