tclederman: Thanks for that little gem.. I have a couple more questions..? If any of you guys were going to to try to swap one of these carbs to my model, Which 1bbl with the manual choke would you go for? Also, the jet size in the call out re-manufactured 1bbl rochesters for my 62 is 56 thousands.. Does anyone know what the jet sizes are on these later single barrels?