Which "drag race" master cylinder?

First, I don't get all the "stops good" or "didn't stop good" due to a different MC. Tires stop the car and brakes stop the tires unless they overheat (drawback of drums). The MC just makes pressure. So, these guys must be talking about "pedal effort required to make a certain pressure". A smaller bore requires less pedal effort, at the expense of more pedal travel (depends on sponginess of hoses, air bubbles, slightly fluid compressibility).

If you use a 4-2 bolt adapter plate ($30 ebay), you can use many MC's. I use one for a 95-99 Breeze (w/ ABS) on all my old Mopars. It has 7/8" bore. Many here use an 80's truck MC (post 28 ), or buy the same PN for 2x price at speed shops. Don't go too new or you must deal w/ "bubble flare" ports. Also plumb an adjustable proportioning valve in series w/ the rear tube.