Not mine, but a heck of a starting point for a track car, maybe even a Challenge car!!
ebay spec miata
Ooooooh-that cage is pretty.
Cage came from another car? That isn't something I'd really want to deal with.
its just a mass of steel tubes dave...haha.
The back half of the cage looks like a Hard Dog. I don't know their door bar designs as well, maybe, maybe not.
If it runs and drives, it could make a really fun little track toy for cheap. Those wheels alone are about $120 each.