Which coupler for DD to 36 spline 5/8 ? Can't find a fit!

Here's what's available at summit, I brought up the 3/4 DD but other sizes/types are available...
Borgeson Universal Steering U-Joints - 5/8 in. 36-spline Shaft End 1 - 3/4 in. DD Shaft End 2
Thanks for the input. I may now try a Borgeson and call them first. Have you ever heard of 36 spline 5/8 not fitting from certain manufacturers on A Bodies?