Ray,
I am 6' 7" myself. I am no longer a working photographer, but I still have my tripod from those days.
It's a Tiltall, manufactured by Leitz. I chose it carefully among others because it had unique qualities perfectly suited to my height. When all three legs are fully extended and the center shaft is all the way up as far as it goes, the base for the camera sits at 72 inches from the ground. That is as high as the bottom of my nose when I'm standing without my shoes on. Once my Olympus OM1 was mounted, my right eye (the one I use to view and focus) was *exactly* in front of the viewfinder (about 74 inches from the ground).
When I got my Tiltall in the early 1980s, I remember being struck by the fact that it was good and yet not at all expensive, though it was made by Leitz, which would normally mean "expensive".
I strongly doubt that the Tiltall is still in production, but you could look for it in the used market or on eBay. (This URL could be a good starting point: <http://tinyurl.com/2b8v24>)
Good luck.
Marco