1st off, Welcome to Stovebolt Oldbusguy!
Since your "bus" falls more into the category of a
"Big Bolt", I have moved your post to that forum for hopefully the best helpful replies and discussion on your question.
On a slightly different note, you can post an ad in the
Truck Parts Wanted forum to see if a fellow Bolter may have or know where to find what you need.
Good luck in your search and when you can, maybe post a picture of your "Bus".
