Rear end widths, worth keeping?

[CG]

Slowly but surely thinning the herd and parts stash (where does all this stuff come from haha!).

I'm down to three extra rolling chassis that I'm ready to say goodbye to, and while chances are slim Ill ever need them, I'm thinking about keeping the rear ends. I have no idea what the gearing is in any of them (all C10's). The 67 and 69 were both V8 trucks with factory overdrive trans (all that stuff is long gone). The 68 was a V8 auto truck. The 67 and the 68 are trailing arm. The 69, although a Chevy, is a leaf spring truck.

Not 100% sure on widths, but aren't the 67 and 68 a little narrower? Do these have value over the wider rears? If so at the very least I could sell them down the road.