Master Cylinder selection help

I have a 71 Dart with 73+ single piston manual disc brakes. It currently has a drum brake master cylinder I believe (equal sized reservoirs but not sure of the bore size). The braking performance is poor.

My plan is to order a NEW 73 disc brake master cylinder in 15/16" bore size. RockAuto and Classic industries list Raybestos MC36406 for around $50.

The 15/16" size is listed as "power disc brakes" and the 1 1/32" is listed as "manual disc brakes". It's my understanding that the 15/16" bore provides more braking performance and a shorter pedal.

So here is the question.

Will the 15/16 Power brake master cylinder work just fine with my manual disc brake dart?