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I found pedal feel to be fine with the 15/16" master cylinder. It's got a bit more travel then standard but nothing major. I eventually swapped to VT master cylinder and Harrop 4 pots all round, noticed no difference in pedal feel or travel to 15/16" m/c and vt calipers (except nearly went through the front windscreen when I stepped on the pedal).
being a VR, i would say it has the 15/16 cylinder. my whole kit cost about 350 or so. that included new rotors, used calipers, brake lines, vt master cylinder, vs booster and shims to fit the rotors. definite improvement over the old brakes. very happy for the price.