Master cylinder bore sizes

I just finished my 67 Barracuda (finally!) Anyway, It has manual brakes with the 73+ front discs and 2.5"X10"rear drums. I used one of those aluminum master cylinders with the 1 1/8" bore. The brakes stop pretty good, but there is only about 1/2" of pedal travel and I have to press really hard on the pedal.

In my garage I have a brand new (not rebuilt) master cylinder (Raybestos part # MC36412 from rockauto) that is supposed to be for a 73 Dart with front disc/rear drum manual brakes. The bore size (according to rockauto.com) is 1 1/32". Would this be a better master cylinder for this system?