lying under cars is gonna be a thing of the past

Details? What brand? How much overhead required, floor minimum thickness, and AC requirements? Am aging out myself and this would be a certain garage upgrade. Thanks

The hoist is a HAPP but I believe they are only Australian. They lift to a total of 6 ft and can lift 4 ton. My enclosed Carport has an internal height of almost 12ft. The concrete has a thickness of 5 inches which would not be enough for a 2 post so the decision of 2 post v 4 post was made for me. They came in 3 phase or 240V and I took the 240v as I dont have 3 phase power. They also have an option of wheels however there would be nowwhere for me to wheel it so I am bolting it down. I am now just waiting for help to bolt together as you can imagine the components are heavy.