It is a permanent magnet motor since it only has two terminals at the end of the motor housing. I cannot seem to figure out what model it is, however. A lot of the basic parts swap between a lot of the frames (like the clutch handle that you obviously need), so parts should be fairly easy to find. Due to the motor mounting style you will not be able to straight swap for a series-wound motor which would make the unit more powerful.
If you can clean it up and get it running it would be a winch, and a brand-name one at that. I say run it! Email Warn customer service with your pictures and see if they can identify it. Once you have that they can send you a parts diagram and manual.