I am not going to go into details but I have been trying for several months now to get a 9 1/2" clutch plate to suit the JT5 box, without success.
I have finally sourced one and given my difficulties wanted to put up the part numbers and spec for the next person who finds themselves needing one.
Here are numbers, spec and photos of both the 9 1/2" and 10" plates.
These work with the standard Jaguar pressure plate and the JT5 box.
9 1/2" clutch:
1970’s 2.8l Ford Mustang, Capri etc. 10 spline 9.5" 1 1/6" hole diameter
10" clutch Sachs BBD 1022
This plate is used in a lot of Ford cars.