The thermaquads worked good when they were all that was available. Once you put a bigger cam in its hard to get the rich lean adjusted perfect do to vacuum loss and RPM changes where torque range is.
Not saying it can't be done I've seen guys make them work . You'll be playing with it a long time. And how old are those carburetors now? In a pure stock class they must be used. Other then that they are not worth the aggravation unless you are looking for original.
This is just my opinion . Think about it and ask around. We run all types of motors here I love the a 4 corner carb on anything with a larger cam. Other wise when you drop it in gear you'll have what we call a mule trying to walk with a load. Rather then horses at a gallop. I wouldn't even consider a TQ on any performance motor with today's fuel. Listen to one of these carbs in gear on the street from a dead idle with pump gas.