Good to hear from somebody who's experienced these things, thanks!
My model B is a bit warped, but I'm boneheaded enough to try out misguided experiments...
Looking forward to seeing what kind of tune I can put on it using my wideband O2 gauge!
Marvel updraft carbs are used on many many cessna 172s... didn't realize they made stuff for cars also. I could believe it's much tougher to design an automotive carb.