As I looked through my records, the carburetor I currently have is in fact a Quick Fuel Carb. So these are actual Holly Carbs as well?.. So much information and so much to choose from...Are the Quick Fuel Carbs just as good as the Holly Carbs? The Quick Fuel 650 I currently have required extensive tuning and clogged up easily as the car went through its cosmetic restoration of over a year. I had to rebuild it at $250.00 just to get it going again. It performs awesome when optimally tuned on the dyno.