Hey Jim I cannot help with the belts but they did not have rears in 64 yet I do not believe,I have never seen one that did yet.You will just have to find some later ones and bolt them in for the rears..Bruce
I haven't either, I thought it was an option though. But it seems like anything should work up until they put shoulder belts on the rears. My original '64 didn't have them in the back but my '65 did.