Anybody know of such an adaptor?

I plan on running Holley teapots directly bolted to a  56 style intake manifold, but then I  also want to run the later Holley 4100 series carbs (as used on the 57 Fords) on the same test engine that I have for testing of rebuilt carburetors.

Easier to change an adaptor plate than changing out the intake manifold.

Thanks in advance,Oldmics