yes you can swap heads either way with some machine work, but why would you want to? the stock cleveland heads, even in the 2bbl versions, flow at least what the aftermarket heads for the windsor flow, and with a bit of port work they blow the windsor head away.
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64 falcon
66 falcon
66 mustang
my mind is aglow with whirling transient nodes of thought
careening through a cosmic vapor of invention
You can undeed use C heads on a Windsor with only a slight water passage modification. I used to use these " Clevors " in my dirt modified with great results. It's not a new idea.In fact the technology has been around for about 30 years. Ford had a little project that set the world on fire using C heads on a small block Windsor. They even had a secret codeterm for it ......................................... Boss 302.