William,
Hello. I am using a Clifford dual quad manifold with adaptors and (2) two barrels on my Willys coupe. I use two Autolite non-progressive, 1.08 venturri carbs with 1:1 linkage.
I love it. It looks cool, idles nicely, gets 17 mpg and runs 13 second quarters (additional engine mods).
I also have a couple of cars with the single quad, but for a street rod with a WOW factor I prefer the dual duals. Either way I think you will be happy - just dont use too big of carbs. That's one reason I prefer the Autolite carbs. They can be had in a variety of sizes, the bolt pattern is the same as a Holley, and they are generally dirt cheap.
Good luck.
