Mine has the original sheet metal (or at least some of it). I purchased all the original still metal for an early 88 about 1 year ago hoping to build a "clone". One day last summer a guy came by my shop and wanted to know if I wanted to buy another Oliver. Told him I would take a look at it.
Went the next day to take a look. Pulled up at his house expecting to see a "normal" 88. There sat an oversized 70. Couldn't believe what I was looking at. He told me what he wanted for it and I paid him so fst he didn't have time to change his mind.
The engine isn't stuck and some one had painted it with a brush several years ago and that preserved the metal quit nicely. Have some of the parts at the metal stripping place now getting them derusted.
All I need I need now is an intake/exhaust manifold setup and I can hear it run. The manifolds crumbled when I touched them.