The ball and trunion style can be converted by swapping the 65 tail shaft and tail housing. Output shaft splines have changed several times. 0nly the 1975 and earlier front planet is correct.
Doug
does it have to be a 65 shaft/housing or can any later one up to '75 be used.
65 only. However it can be from a Poly 318. Wrong bell housing, correct tail housing and shaft. People through them away. I've picked up several. Four 65 Big Block's in my stash in case the race car grenades one. So far 800 passes on my old 10.20 car, 400 passes on the 9.0 car, around 200 in my sons 9.5 turbo car. Only failed one tail housing. It was a U-joint failure at the top end. Never hurt a input or output shaft.
Doug
