TQ questions

I also have a couple of Edelbrock/AFBs here to choose from as well .. one is a 500, the other one is 600/625 cfm. But I've had issues with running those with percolating when I shut them off hot. Not these 2 particular carbs (I've never run them) but I have run several of that series carbs// and besides that one issue , I like the way they run. I have recently gotten a couple of (I think they're 1/2" thick) phenolic plastic spacers/insulators in case I decide to run one of those on this car.
Which is why I'm leaning towards putting one of my TQs on this car. I haven't played with a TQ in some time, when I last did they were on stockish engines (like this one will be) but in their original application unlike this one. Though I know that if it was factory 4bbl it would have been a TQ