upgrade master brake cylinder

I like DoctorDiff's 15/16" master but I do like the look of an the original Bendix too. This one that's been available for a bit, the MBM MC5621 http://mbmbrakes.com/mc5621-1960-1970-mopar-master-cylinder/, looks great but the bore is 1.125". Will this make a big difference re pedal feel on stock manual discs, '70 Dart?