Still looking for a spare tire
Original tire? Not exactly sure. I have to trust the original owner replaced (if ever) them with the same size. The ones we pulled off were 195-70 (I think) R14, on plain ol' Dart / Duster slant six - nothing special - 7-1/4" rear - drum brake car. I think the original tire designation was E70-14. Not sure what the rim width was.
I don't care about looks. A painted steelie is just fine, it will be covered up. Heck, I'd go for one of those donut spares, if it would fit. I just want a spare in my son's trunk, before he gets stranded somewhere and I have to go get him. The kicker is that we want it covered with the trunk mat, leaving a flat floor for coolers, lawn chairs, etc. when we go to car shows, and has a clean finished look.
As far as fix-a-flat, I'm not a big fan. I have every flat fixed by patching the inside, rather than plugging, etc. More just for peace of mind. Plugs can blow back out, if not properly installed. And the fix-a-flat leaves a mess inside, not conducive for patching.
Jerry