This! You can basically mount any carb you want on these things, that Edelbrock has thin side walls and if you ever want a 4100 carb to work easily the Weiand is the way to go.

 

I have an edelbrock carb. no 4100. Still have the two barrel setup so you bring up a good point. I'm mostly ticked because any other manifold I get I will have to make a new throttle bracket. Still waiting on the starter at this point, it wouldn't budge with power going directly to the motor.