"TQ is going to give you way better mileage around town."

how's that? the engine is going to pull the needed fuel amount reguardless of carb. Now I can see it you are running way to fat primarys...then yeah. I ran a 750DP on a very mild 340. Not sure about "city" driving but it got 17 or so on the hwy at 70 w/ 3.55 gears. I also ran a Proformed main body 750DP on a supercharged 440 managed 12-13mpg hwy running 70 w/ 3.91's. Both cars were automatics. I doubt the TQ would have been "way" better