I'm new here but the maxjax maybe exactly what you want. A friend has one and I am thoroughly impressed especially when I used it to change the
oil in my Dodge ram 1500 quad cab. Very stable and no center restrictions. My buddy leaves one post in place(close to the wall) and removes and stores the other post when not in use. Only take a few minutes to reinstall the single post, works on 110v, cost less than $2200.00 new, installed it himself after having the garage floor thickness checked by taking a core sample.