Underbed spare tire mounting hardware

[odis.dunkle]

My '69 GMC 2500 project has a homemade hitch that invades the underbed space for bracing and prevents the spare from mounting underneath. In the past the spare has either been mounted to the front grille or ridden loose in the bed.
I would like to revert back after removing this hitch.
I have seen new parts to do it from a couple of online sources.
But my question is, if I where to go hunting the pull-a-part world, does anybody know if there are other year ranges, models, etc. that I could pull from and get parts that fit? I mean, all we are talking about is a cross bar with brackets and a couple of hanger bolts, right?
I would also be grateful if somebody with a similar rig could post a photo (or two) of their setup for my future reference.