'72 GMC Split Rim Question

[harrydunn]

I was taking a look at my split rims today to do some touch-up and was curious (yet again) what my options may be as far as a one-piece, 8-lug, 16" GM rim. I'm not sure if I'll do it yet but it's been on my mind quite a bit. SPID says "7.5-16.0-6 PR HIGH." The tires are in great shape (235/85-16") and I'd like to swap them over, so I'm not interested in 16.5" rims. I'd also like to be able to pop my hubcaps right on. I'd keep the original split rims in storage. What specific rims do I need to be looking for to keep it factory in appearance?

Also, I was surprised to read "tubeless" on the side of the tire. I figured split rims required tubes. Perhaps I misread that somewhere.

Thanks for your help!

--Mark