I couldn't find any short intake plenums for a single barrel carburetor, so I came up with this. It was modelled for a Carter YFA on my 1976 Ford Maverick, but should work with most single barrel carbs that I've seen.
Print the mount upside down to reduce the amount of supports and increase compression resistance where the bolts will go through. The throat should be printed with the circular intake on the bed to eliminate supports and allow a hose clamp to compress around it with minimal chance of breaking.
There's 2 holes on either side where you can push pins through to lock both pieces together after coating the mating surfaces with glue. You can either print the pins that are provided or use something like a wooden dowel.