i am waiting to put on a rear s4 bumper on my b6 tdi avant,only thing is is that the bumper has the holes for the sensors,i already have the set of sensors to go with it but nothing else.can anyone tell me the individual parts list that i need to complete the job including part numbers.i know its not a cheap job to do but i would prefer an oem look and finish to it.the car as it is does not have parking sensors fitted so does this require any fiddling with vcds to get it working?