The 6-pack is a proven performance intake for hot street/strip cars. The tq can be a good carb, however there's a shortage of good spreadbore intakes out there. If you want a dual plane intake, forget it. Unless you want to run a spreadbore adapter which is a known power robber. I love the idea of spread bore carbs, just dislike the lack of aftermarket support for them. Tuning the primaries on the thermoquad is very easy. With a properly dialed in choke and primaries my thermoquad made my 440 an excellent daily driver. However the secondaries were a pain to keep in tune. Any temperature fluxuation and I had to tinker with that air door again.