Dan,
Look at the test picture I posted in the CC Lounge and you can see my car on mine. I got one of the first set they sold and they gave me a break on them and I love them. They are 21" high and with the car setting on them I can set up under it. Also the width can be changed easily for any width car.
Al,
A word of caution. The powder coating is very slick if your tires are the least bit damp. I went to the hardware store and got two strips of that stuff they use on boats that you stick down and it has a rough surface and it works great. I normally back onto mine and I just put the strips in the middle of each ramp for about five feet. After watching them trying to put a Super Bee on a set at the car show last year I asked them why they didn't do that and the woman said that sounded great and they went right down and got some of it. The woman that was doing the display for them told me that once they had the car slide off as the tires were wet and they started to spin. I also got the bridge that goes across them. Did you ?
Ron