modern xtr m975 caliper front or rear

[cannondale king]

as title really changed to a post mount forks :roll: and had to change the caliper to a post mount too :roll: :roll: so i have a

IS mount xtr m975 caliper that fits 160mm front rotor or 140mm rear yours for the grand some of £30 posted and its got shimano sintered pads fitted that have loads of life left