It must have been stored inside most of it's life, as all the chrome is cleaning up nicely, really doesn't have any rust. I think he mentioned they put a tank on it.
When I pulled the carb bowls off, I noticed a bunch of parts were missing. The #4 carb looked like they stored acid in it. I found a frozen set on ebay and bought them.
I first boiled them, to free them up, then soda blasted them. Turned out pretty nice.