Ordered my Holly 750 ultra double pumper...we'll see how efficient it is while I experiment in tinkering with my 650....learning how to clean it out and shelving it for a later time to use. Maybe I'll get it tuned at a later date with the car again. Thanks for all your input and suggestions. Might anyone know where I might find a cold air intake for this car rather than sucking the hot engine compartment air? The hood clearance between the carburetor and the inside of the hood is minimal....