For the emblem, I found it on Ebay...paid like $5 for a pair of them. Not a bad price. It is about 2" in diameter, maybe a little less. AzCoupe I think was looking to reproduce them.
The carbs: They are all Autolite 1100s. The center one was rebuilt by Pony Carbs. They are supposed to get rid of a lot of the problems in the 1100. It runs really good. I just removed the autochoke from the outer two. I'm still at a crossroad with what to do about the center carb auto choke. No place to put it to with the Cliffy Headers. I'll figure something out. When the car was taken out of service...the choke wasn't working anyways, but it still ran.
As far as hooking up the air cleaner, I'm using a 1-4V base. That way the center hole is large enough that it will no interfere with the choke. It will also allow me to recess the air cleaner down some so clearence will not be an issue. I'm still working on a system to hold it in place. More then likely, I'll use a hole already drilled in the air cleaner on the center and attach it to the center carb. I'll see how that holds up. My other plan is to make something that will attach to the two outer carbs using the existing holes.
Slade