YES! A Cadillac batwing can be worked to fit the Chevy 2x4 carb set-up.The carburetor spacing is different, but a skilled bodyman can change it by cutting a off center circle around the mount that needs to be moved, and move it around 180deg and reweld it. It has been done a lot of times. They are also mounted backwards so the front becomes the back, also the mounting is trimmed back. It's true that the RH air cleaner needs to be off center for the deluxe heater, but even that can be modified if required.
Once all has been done, no-one would know as long as they don't look underneath.