I bought a replacement engine today. I was a little unhappy about paying $250 for a 216 and I had to travel 45 minutes to pick it up.
But when I got there I noticed the valve cover had 4 screws in addition to the 2 acorn nuts. And the compression was 120 psi. So I'm pretty sure this is a 235 and not a 216. So now I'm happy.
The block and head are painted blue. And there's no serial number next to the distributor, so I'm thinking the block must be a replacement.
The block has casting number 5843350 and the head has 3836848.