Hello we did a couple units they were 2010 visions. I looked back i take it you are doing it so no water gets into the wabco unit. They made us drill them at first then we did the new lines, unit and brackets as per a tsb. We charged 6 hours to do the job but the buses were only 1 -2 years old then. What i remember was a lot of bleeding.One of my techs did the jobs not me actually. Since the buses had low mileage no problem removing and installing lines. Since the unit is repositioned need all new lines so they line up. Not to bad though.