its just the master cylinder, found a "how to" and sounds pretty easy
im in 2 minds as to whether i should go with 262mm size rear discs with slightly larger caliper on rear of my ek4 (run the legend conversion on front), im pretty happy but would like a little more from back especially when on track so balance is little better
if i do go for it then gonna see how pedal feels and if not happy with feel will try larger
dc2 master cylinder