Factory split Rims?

[dtkarst]

I recently picked up another parts truck to disassemble and put onto here but the guy said his dad had a gmc and they swapped wheels on it since his dad wanted the slotted mags that were on his, and two of the rims on the GMC are the split-rim style with hubcap clips. I personally have not seen these on a half-ton but mainly on bigger trucks. Does anyone know anymore about those? I have never seen them on a half ton. The truck they cam off of was a 66 GMC, CC, BBW, A/C etc. I tried buying that one while i was there too but his dad was "going to restore it someday" along with the other 4 vehicles in line to be restored. But any information would be helpful. Thankss