Steering back to the Kirkham for a moment, if you look closely in one of the pics, as I finally did, which shows the passenger side of the car, you'll see a reasonably-sized
oil leak sitting on the ground where parked.
FWIW, the seller said his Southern Automotive receipt shows a 1968 standard bore side oiler block.
I don't think it will be going any higher than $75K, so the "winning bidder" seems to have gotten a decent deal for a Kirkham. For my $75K, I'd take Sal's CSX4241.