Nice paint and interior, but not a survivor.
The engine (and components) and trans and replaced rear were restored. The subframe was restored. Steering parts (with a repainted steering box) look original, other than that the undercarriage is restored.
So you're saying the body # is stamped on that rearend seam? Do you have another pic of one? Never heard of that before. Body # is 115464, which doesn't appear to match what's stamped here (?).