there is deffo a 3 way connector on ther rear of cossys. they only have 1 brake line to the rear then split 4 each side. the part cozzie4d is talkin about is called the rear brake pressure reducing valve. its located over the top of the main beam & it is infact £120 from ford allthough its no longer a part that for can get hold of. when my car comes off the road at the end of september im gonna take mine off & see if it can be rebuilt