Wilwood M/C recommendation. Bore size.

5.7 hemi said
I thought 15/16’s was the go to for manual brakes.

The go to is what works and works the way you like.

Bill Reilly set me up with my 7/8 willwood master and I'd never go larger. Nice pedal feel and easy to stop. I used to use 2 feet on the pedal with my old master.