4sp vers auto shaft length

Yes the 727 is longer and uses a different yoke. A b-body a833 uses the same yoke and shaft length as a 727. An a-body with a 904 on the other hand is real close in length and uses the same yolk. Maybe you can find a shaft at the junkyard. I just got done swapping a 904 for a 4 speed in my duster so I just found this info out first hand. Good luck.