I'm also contemplating a plan for street/touring wheel/tire changover capability. I've been unable to find 17" or over rims with a low backspace that I would like, say 3.5 to 4 inches to allow swapping to a similar 15" rim. Of course the diff needs narrowing and a mini-tub for this to fit tucked under (no jacked rear and tires sticking out for me!).
Seems one has to run a high offset rim like 6" or so to make this work unless I'm just not looking hard enough. Sad as I like the deep look of low backspace on the rear.
What's the offset on your Weld rears?