So everybody is just going to ignore Carbking's recommendation even though he is the only bonafide carburetor expert on this site?
Carbking is not insulted. (And if one analyzes the word "expert" one finds from algebra "x" is an unknown, and "spurt" is a drip under pressure. Thus an "expert" is an unknown drip under pressure!
Questions are asked, I sometimes post an answer. In this case, both Jerry and I posted tangential answers. How those answers are used is totally within the domain of the reader.
The internal combustion engine is remarkedly adaptable. There are few, if any, circumstances where only one carburetor is the "best" for an engine.
When picking a carburetor for an engine, in addition to size, the following variables may be considered, generally, only one of these may be maximized:
(1) initial cost (the OP has maximized this item, as he has the carbs of which he asked)
(2) tuning cost (NOTHING is perfect out of the box)
(3) maximum power
(4) driveability (if used on a street-driven vehicle)
(5) economy of operation
(6) reliability
Jon
