Albert, I'm glad that you brought up the "driver" vs "Show Car" issue. My COPO has a CE motor, replacement M-21, but original BE rear end. I have no history beyond the previous owner, and the NICB that says it was shipped to Berger 6/2/69. Since I tell everybody who looks at the car that it's incorrect and incomplete, I get a lot less static.
If I were to put the car up for sale, IMHO, that would change dramatically. I drive it about once a week to a cruise in, but it's not any more than a #3 car on a good day.
You guys may have seen the pictures of it posted here, where I refered to it as a 20 footer. Point is, if you want a trailer queen, go for it. If you want a driver, go for it. It's not about the money until it goes on sale, or if you're in the market.

Andy