carburetors 360 , 273

I went on this site a while back and ask what was the largest cfm 2v carb I could put on my 273 65 barracuda.It was suggested that i get a 2v from a 360 which i did.What i didnt know was that the bottom of the carb on the 360 is larger than the 273 2v.My question is do they make ,can i get
a base that will let me use this carburetor on my 273 manifold .t needs to go from small to large so i quess some sort of adapter is needed.Any help would be appreciated.