Master Cylinder Differences?

that 1 1/8" piston master will require a lot of leg.
..you might like a 1" bore master better?



Just pulled the MC out of my challenger and it's actually 1 1/16" bore.
The new one I have is 1 1/8" bore.
You mentioned with non boosted brakes I should be using 1" bore.

Can someone tell me what I SHOULD have in there?
I'm happy to purchase the correct part so it's not about trying to save a dollar.
The sort of info I need just isn't available in Australia,that's why I ask you good people and those on C-C.com.