[truckdog62563]

Agree, you might want to verify there’s a D in your Serial Number and not a Y. I might also ask in your truck has rear shock absorbers. A sure sign it’s an F-2, although they were a rare option on F-3s. I found an old FTE thread on this but it doesn’t really add anything to this conversation.

I didn’t mention that there is another wheel option that accepts stock hub caps, but they are very rare and expensive if found. The Budd #71410 is a 19.5” x 5.25” also first offered in 1956. This is the true tubeless replacement wheel for your 17” widow maker. The 8R19.5” tire is close in diameter to the 7.50-17”.