AVS vs AFB

I like the AVS better because the adjustable secondary air door and the small bump in cfm due to the secondary side spray bars. If you have a 3 step rod
(which rod you new guys is easily identifiable by the raised rod cover. It looks a little like a hat rather than a flat top round on the edelbrock crabs.)
Swapping to a two step rod is easy and readably accepted with the flat top cover.

While an3 step rod is a fine tuned rod for the application it was one, you may get lucky to have it work well for you.

According to the old Carter tech line, they said to me that the small unit flowed 630 cfm. That’s 30 more than the same size primary AFB.
Then if your handy with a dremal, you could pick up a few more cfm.

Do not that you can convert an AVS to work with an electric choke. I used stock AFB parts. The Edelbrock should work. I don’t remember all the in’s and out’s. But I never had trouble making the swap. The worst thing you don’t have is a drill bit and tap to match the screw set to Mount the electric choke. It is a very easy job to perform.