Worked with a guy in the early 90's who owned a 1970 LT1 Corvette. He told me the shop that maintained it for him had a mostly disassembled 1965 427 Corvette whose owner had reneged on paying the restoration bill, and the shop owner wanted to get rid of it. Told him it had to be BS as Chevy only put the 427 into the Vette in 1966, but he swore it was a rare one off. The shop owner just wanted to cut his losses.
Guess I should have rented a trailer and grabbed it, as a few weeks later when I asked about it, was told that Roger Penske had personally sent his transporter and snapped it up. Coudda, shoulda, woulda.