Thanks for the tip! I need some input on what the perceived value of the engine is in the stated conditions.
A new option came up today. I visited a shop with a few late 40s and early 50s cars and asked if they might have a 235 around. The worker quickly referred me to Kino, who had one in a '50 suburban chassis and her claims has not seen a mile since it was rebuilt. It looks nice and except that the water pump looks shorter. He said he'd look for the receipts for the rebuild, which he claims cost around $1040, and he'd sell for $1000. That's pretty high, but if he can prove it's rebuilt, that's lower than the cost to rebuild.