I am having a similar issue with tires/wheels, except I'm going the opposite direction. I have a '51 3/4 ton with optional 17" 8-lug wheels. Since they are split-rim I have to replace them becuased no tire shop in Edmonton will touch them. The only 8-lug GM rims I've found have a 5" backspacing, which is too much and the rim hits the tie rod ends. I'm just going out today to look at some after-market white spoke rims that I think are for a trailer. The backspacing is right and the tire store has assured me that the bolt pattern is right also. We'll see.
If anyone has a different idea, I'm still open to suggestions. The white spoke wheels will (in my opinion) look awful, but they're the only solution I've some up with so far.
