Thermoquad vs square bore

I gotta be honest, they look like the same damn intake minus the pad and lack of carb stud mounting choices for a Carter carb.

IMO, I'd do a action plus and be done with it! Not to mention a bit cheaper as well. It's the best dual plane out there as cast for a T-Q on a bigger engine unless you need a single plane intake for some high end power. Then it's the M-1's turn.