Victor Engineering use to make the best one. It was a flat board with a bubble in the middle for leveling. It had 2 adjustable screws on one side and 1 screw on the other side. Once the board was leveled out then you place 4 scales on it lined them up to your cars width and length and you were ready. Came in a nice heavy duty bag and box for transportaion and storage. It wes definetly way more then $160 in the day.
People would definetly want one.
Later,
