This is a classic old school Holley R 4777-2, it is 650 CFM performance carburetor and is rebuilt and tested.

It features dual feed competition bowls and dual pumps and is a good street or track carburetor. 

If you want that 1960-1970's look and simplicity, this is it. 

All metal parts vs the newer carbs with plastic components, features the classic metal manual choke assy. .