Thanks, but I think I actually spent $ 3,000.57. :D Well, my opinion on the 2 x 2 setup hasn't changed too much. The single 4 barrel was a little more responsive and generally felt like a better match. However, I wouldn't go back as I really like the looks of the 2 x 2's and surprisingly I get a lot of positive comments from car guys on them.
Yes, mine are a true primary/secondary carb setup. Vintage Speed, from whom I bought it, built the carbs and put the proper bottom plate under the front one, so only the rear carb has idle screws. It also has progressive linkage so I am pretty much running on only a 2 barrel carb 99% of the time. In defense of the system, I really just bolted it on and that was it. I fiddled a little with the idle screws once or twice, and put a pressure regulator set to the minimum (3 lbs fuel pressure), but nothing more.
So, as Fernando used to say "It's better to LOOK good than to FEEL good." :D:D Sometimes we give up a little to gain some coolness, and that is the way I see these carbs. Thanks for asking.
Don