Slant six single, to slant six double.

That about sums it up. Plus of course tuning everything to work together, which is necessary no matter how many barrels you have. Don't let me talk you into something. If you have a plan, go for it. There are no wrong answers.
I mean after reading the plethora of reviews in here about clifford im definitely hesitant.

I can sus out what carburetor and such probably go with a 400 cfm like a holley slayer.

How did you sort out the linkage for yours?