My 61 c10 currently has a 10.5 pressure plate and a 9.5 disk and i am wondering what i should get since the book says

Clutch : 10inch

Type :diaphragm

Drive : strap

Spring pressure applied by : one diaphragm spring

Spring pressure : 1325lb - 1500lb

Disk

Type: one spring cushioned plate with 2 faces

Vibration dampening at hub: 6 cushion springs

Facing material : woven asbestos composition

Outside diameter: 10

Inside diameter 6

Area (sq in) : 100.53

Ring gear

Number of teeth: 168

Width and pitch diameter : .4160 wide. 14.00 pitch diameter.

Clutch attachment to flywheel: 6 bolts

Should I stick with the size I have in it now or change it to the book. I am not having any problems with my current one I am just curious if I should swap when i need to change and what to change it with when i do change it