If mr PBody can't find his ill see if I still have mine.
If you are using aluminum rods and have an old junk one, it's easy to make one from it. I just make a drill sleeve if using an aluminum cap.
Pretty easy to make on with a steel cap too, you just have to lay it out.
Thats all mine is... just a cap but I torque the cap with the bearings in it each time and drill just the one bearing... mine just happens to be a production Viper rod