I just was under the car and looked very closely at the rear of the trans shaft everything looks good there so if it is a spline or tang it seems like you would not be able to see it unless you ripped it apart. I looked for a nut on the side of the trans but I guess unless you knew what you are looking for you wont see it. It would be good to establish if there is pressure like snapped bolt suggested I was wondering snapped bolt did you ever establish exactly what failed on yours and how did you repair it? I imagine it would be much cheaped to find a good used one rather then rebuilding the trans.any one close to N.W. In. have one?