Tracy , I kept this information for reference, I forget exactly where I got it. maybe you can confirm or maybe its inaccurate, but they state that all 727's are 29 spline, whether big block or small block. I haven't ran across a 727 yoke that would not fit a 67 or later trans , BB or SB. you are the trans guy , and the great guy I got my yoke from , so now I am just curous lol