Hi Dan, After looking closer at the transmission by removing 80 years of crud, there is another u-joint right off the transmission. I should have cleaned it up before inquiring on the extension propeller shaft. I will try to attach a picture of the my 4 speed transmission. Sorry for the misdirection after all of your research.
1946 Chevy 1/2 ton 1946 Chevy 1/2 ton donor Early 1947 GMC 1/2 ton long bed donor
