All I know is that I went from a short tail shaft TH350 in a 72 Nova and converted it to a 4 speed Saginaw and used the same yolk and driveshaft. It was a tight fit with the linkage and speedo cable but it all worked out. I routinely went back and forth in my circle track Chevelle from stick to automatic to a powerglide, all took the same yoke and driveshaft