As we pointed out in the text, there’s plenty of choice when it comes to carburetors (if the engine is equipped with one).  Truthfully, a 4150 carburetor is going to be a lot easier to live with on the street than a Dominator.  But on an all-out big displacement engine, you might need the big 4500-series carburetor to provide the fuel the power plant demands.  The bottom line here is, take every piece into consideration.  Then make your decision to buy.