Thanks for all the info. The rebuild kit you listed is what I used for my ball and trunnion, it fit well. It's too bad they don't sell the actual housings. Thanks for the clever workaround idea, I never would've thought of that. Might be an option depending on how worn the housing is.
My friend just did the U-joint conversion you posted for his 61 Belvedere but it cost him around 800$. Trying to see if I can make do with the ball and trunnion for now.
I'm headed to the Mopar parts yard in Ontario this week so I'll see if I can find a NOS or a used trunnion that's in good shape over there.
Cheers
