I uploaded some pics to show the difference between the flat bed version I have, and the regular bed version. The flat bed version on the bottom is what I have, and it would be an extra cost if you have to buy the regular bed base. Just thought I would show you the difference so you can make an informed decision. As you look up the throat, you can see the how thick the locking jaws are.The base is slightly different then the base for pickup beds, because of the B&W flat bed I have.