Another "what's the difference between"

They are probably OK.

Double check that bolt pattern. There are chevy pattern 4.75 and 5" Magnums floating around s well. I bought 2 at a swap meet, that the guy assured me were ford/Mopar pattern, but they weren't. I'm glad I only paid $20 for the pair. They had centers, which I can use, and I can probably get my $20 back as well from a chevy guy.

Also double check that center cap style/hole size as indicated above.