After tinkering with my swap meet 750 Holly this morning I have decided to bite the bullet and buy a new carb. My engine is a copy of the engine Ted built that was in the March-April Y Block magazine. He used a Holly 750HP List 80529-1. This is basicly a race carb and more money than I really want to spend. My car is a '57 T Bird that will mostly be a street car but I plan to race it occasionaly and want to get as much out of it as I can on the track. Concensus here seems to be to stay away from double pumpers. Vaccum secondaries are a must. I would like to be have switchable secondary jets but its not a necessity. An acquaintence likes the Quick Fuel carbs. Holly 4150 or 4160 possibly? Suggestions from the experts here please.