hey yeah i done this just take off motor from inside the car take off the wiper leaves a fairly big hole. all i did was get a large rubber washer with small hole in the middle, and a metal washer same size, then one of the flat headed mounting bolts from the boot of a citroen ax, put the rubber washer on the out side of the glass metal washer just on inside bit of silicon sealer on them both then tighten up, i haven't had a single leak or problem. i'll try and get some pics up tonight makes a big difference.