The street dominator for a small block mopar is a tourqy intake with smalish runners and plenum compared to most single planes, also the runners are as long as a dual plane so they are not like most single planes.

There is no performer air-gap for a small mopar. The performer air gap for a small chevy has the same exact ports as the non a-ir gap performer for a small chevy, the only differance is the air-gap so the ideal cam would be the same for either.

I do agree about useing the thermo quad, it is a very good carb when you consider the $$$ you would spend on something else plus the heat insulateing benifits and big 800+ cfm from a carb that will run great on a little engine.