The 272/292/312 Ford V8 was used in the '50s. It may be hard to find in a local junk yard. But don't dispair. That's not the only thing that will work. The bolt pattern is pretty standard. You need a pulley about 2" tall and 6" to 7" in diameter. There are more recent ones out there, I just don't know what to look on.
At swap meets there's usually someone who has a whole mess of pulleys to choose from.
