Hello Rick
Great to hear the old girl is getting close, I would make contact with Mike Hudson as he still has a very good R/H strut door of a G model.
Mike is located in Nashville NC, I visited him once again a week ago on my most recent trip to the states, it was still there then.
I grabbed the L/H one a few months back, I would say you would be looking for around the $400 mark + shipping, much cheaper.
I spent about two hours hand filing the door to ensure correct gap clearance, so be prepared to do the same. Mind you I have been doing the same with all my original doors and cowls to ensure uniform / adequate clearance.
He is a member of the forum and you will see him on the parts for sale, here is his email contact
mhudson.bsme@yahoo.com
Regards
Dave