10.5" is plenty big enough.
Just have a good pressure plate that is higher rating than stock.
Like 2600 lbs or there abouts.
You can run an 11" if you would like, but a 10.5 should work fine.
Just my opinion.
Any good known aftermarket brand name will work fine.
Do not need a center force, Brand
A diaphram type pressure plate,not Bork & Beck should be easier to depress pedal .(w/the same lb rating),unless things have changed?????
MBHD
