I called him up to ask more about the mast. It was indeed cut at the bottom. He said there was still more than enough head room. He offered to hoist the boat up to inspect the retractable keel as well.
The stays have been modified already, so they would have to be replaced...
1971 23' Oday Pop Top
You can't steer a boat that isn't moving? Just like a life - P. Lutus