Have you checked if an aftermarket kit has been made for this at parts stores? If you found them all bad used then they should be popular. I know they make door hinge replacements for other cars.
My own 97 Chev truck needs a door hinge pin which they sell with brass things to make up for where they wear.
This one I can't really do working alone because it takes careful support of the door when old one is out and it's a mint truck so I don't want to damage the door.
For mine I will pay a body shop which will only deal with new OEM complete hinge and that's cool because I want it painted to match perfectly and I am not concerned in this case about the added expense.
Check with body shops as to whether they have a source for aftermarket replacements, T
Tom Greenleaf - MetroWest Boston - USA
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http://www.autoacsystems.com/tomgreenleaf/