Jeep grand Cherokee roof. I have one that I was going to use. Went with the soft top. I also have metal bows already bent. I’d be glad to donate it all if you can figure out how to get it.
Just another example of today's un-obtainium, I lucked out with mine. I rescued a'62 Ford Long roof a week before it was to be used to "sight the rifles in" for elk season. Cost a flat of beers, but had to be that day as the brothers were thirsty. Next day it was ready, parked at the fence. I used the inside braces. Both curves were a near perfect fit