I owned a Mac 222 for a while. Make sure you do some measurements of the width of that swing keel to make sure it has not de-laminated from the steel and swollen to the point where it will not go back up into the keel pocket. The winch for the keel cable should be directly under the companionway entrance. To get that thing back in the boat you will likely have to lift the boat off the trailer and put the keel in after blocking the boat up and lifting the keel with a jack. Check out this guys thread on the subject.
have fun with the boat. She sails above here pay grade and balances like a boat much bigger.
Bateau2 - Builder Forums ? View topic - 22ft MacGregor rebuild