Managed to get my hands on an old hi mount winch for bugger all. It wasn't all there and it was in a car accident in 1992 so had sat under a bench since then.
This is what it was like when I got it.
Note the bent winch drum end cap.
Then last night I drove to Berwick to pick up the top hat that's missing and a new end cap. Bonus, the end cap has been modified to take a bearing rather than use the standard nylon bush.
Now to begin pulling it apart...