We have a donor out back legacy that in the past the suspension was taken and swapped onto the rally wagon. After taking a long look at the brakes we decided that they where needed on the rally wagon as well.
The rally wagon came with single piston calipers and 260mm rotors. The out back had two piston calipers and 276mm rotors. Naturally that would make a great upgrade for free. The swap only took us an hour and the results are magnificent. Literally bolt right on with no modifications required. After a brake bleed they where ready to get hot!