There is a similar tool made for air-cooled 911's. It has a square-shaped shank. I had one for my Porsche. It worked great with a floor jack. Peach Parts should make one. I don't know if I'd want to use it with axle stands. That jack hole is made to support one side of the car. I would not want to be under a 4000lb Mercedes if the support gave out!

Todd