If my assumptions are correct your windsheild frame is the same for the two door Dodge body of that period..... and windshiled frames are in particular HIGH demand by Power Wagon collectors in the USA.
I would check Vintage Power Wagon parts in Fairfield, Iowa. (
www.vintagepowerwagon.com) They have imported containers full of parts from the Far East (Thailand?) and may have what you need....... you might also check out the "Dodgepowerwagom forum" for possible leads.
The one I got from Texas a few years ago for my PW was well over $350 US.
Good luck in the hunt!!!
Bob C.