No, you cannot easily put a carburetor on a Ford 5.0 HO (High Output) motor. The 5.0 HO, especially those from the late '80s and onward, is designed for electronic fuel injection (EFI). It lacks the necessary mechanical components to work with a carburetor, such as a mechanical fuel pump and the appropriate intake manifold.
While *theoretically* you could fabricate a custom intake manifold and fuel delivery system, it would be a very extensive and complex project, far beyond a simple bolt-on swap. It's not a practical undertaking for the average person. The cost and effort involved would likely exceed the benefits.
