slip yoke problem / TF 727

Supershafts said
The 727 when it went to the 518 and 46rh/re and newer style then it changed, same diameter and spline count, different cut of the spline.

Yeah I'm familiar with the change. I said all 727 output shaft splines are the same because the 518 isn't really a 727. It's built off the 727 platform but a lot of things are changed/modified to the point where very few parts interchange.