Prior Reman still does them, last I checked. Possibly SIA. Cardone does them, but it might only be for entire MC and pump units. There's a guy on eBay who advertises a rebuild for Jag motors, but he will do other cars as well.
The motor is just a motor, though it has odd brush holders. The pump is a bit unusual.
Those 30 amp fuses should be in your local Pep Boys or whatever. I had no trouble finding one, though they look slightly different.
You will need to swap the fuse, turn the key on, and see what is going on. Report back.
Thx for all the info, appreciated.
I sent a PM to Ed so hopefully he has a hook up on the motor rebuild, I have a M/C unit that is good with a pressure switch on it so between all the parts I'll hopefully have whatever is needed should that be the case...