I didn’t think this was going to become such an issue. I went to several salvage yards and did not find any rims that I could use. I spoke to one guy and he pretty much supported what EchoBravoSierra said about the 70’s 4x4 rims. Unfortunately anything he had was rally style wheels that won’t match what I have.
I took a deeper look at the rim and found “ K1-3” a stamped on the outside of the rim near the lugs and a backwards “F”. I googled this and found that it may be a Kelsey Hayes rim from a GM 4x4. Here is a set on ebay, a way out of my price range, but exactly what I am looking for.
https://www.ebay.com/itm/2043731964...r=&widget_ver=artemis&media=COPYAny help positively identifying or locating a suitable replacement would be greatly appreciated. It has a 3-3/4” backspace.