Probably gonna have to get on the phone and speak to a couple places that sell them.
A quick google found a few places that sell them.
The pictures of the hinges posted on Classic Industries looked like they might have the brass bushings.
http://www.classicindustries.com/cam...s/1706371.html
You got a pic of your hinges? It be fun to see hinges that are too far gone to rebuild..... that would make me scared to see the rest of it.
Just rebuilt mine (old Vette)... the hinges weigh more than the door.
Good luck.