I'm assuming that the jack has a slotted plate on the top and this should fit on the welding seam on the sill. I found that you need to start with the jack at a strange angle as when you jack right up the foot of the jack lifts right up and very little touches the floor.I carry a trolly jack in my car as the thought of changing a wheel on the motorway with the car perched on the original jack as juggernauts thunder past isnt something I want to entertain.