I really don't know, but if any company does it's going to be Smittybuilt. I know they make a couple different cage kits for various vehicles so I would try them. If not, I know of a shop here in SLC Utah that can pre-fab one for you and ship it out. Look up FactoryTubular.com -they are wizards at cage work.
I don't remember if they have sets for early wranglers, but try www.rockhard4X4parts.com. I was there checking out the sets they have for CJ's and they look fairly stout.
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