[Healeys] Clutch conversion

[john spaur]

I have a MKII 3000 with a 10" clutch and carbon release bearing.

I understand that the later clutches are 9-1/2.

I am wondering if it is worthwhile to switch to a 9-1/2" diaphragm 
(many fingers) clutch in order to use the Denis Welch ball style 
release bearing.

I believe I need to change to a later style flywheel too although I 
have been told that it just needs to be changed to a three dowel 
arrangement instead of the two dowel. Is this true?

I am just building a nice driver.

Thank you,
John