for what year or style of truck?
here is a link to a thread that talks about a few differences and especially about hinges and mounting on the cab. hope it helps.
https://www.jalopyjournal.com/forum/...-cabs.1022047/
as a side note, the aftermarket stamped steel hinges work, but they are not always the best. sorta like all the aftermarket panels and parts. they aren't necessarily built to high standards. one of my hinges works fine while the other binds and causes the hood to settle down unevenly in a closed position. hopefully it "wears in" over time. I may try a billet set or look at how worn out my old set actually is. I replaced them because they were reasonably priced so I bought a set hoping for the best.....