Hays Clutch Kits

Anyone have experience with Hays clutch kits for the '65 401?

 

I have used both the Hays orange street strip and the centerforce dual friction clutches in my 455 pure stocker with slicks and street tires.
The hays orange is a nice street piece since it is a little softer on the hit. The centerforce dual friction is a bit more of a heavy duty unit and works well.

 

Trying to find the correct clutch kit for the '65 GS 401. I get conflicting info on diameter size.