These units were pretty terrible, I just whipped them out. It was all done under the van - not easy to get the camera in there. It is pretty straight forward.
Don't muck about with the mechanical linkages, the pistons of both master cylinders are activated by a simple rod that sticks into the front of them. Just disconnect the hydraulics, unbolt the units and remove them by sliding backwards. Avoid making work for yourself!
The end result is a bucket of bits looking like a fishing catch.