this was the e-bay posting
http://cgi.ebay.co.uk/LANDROVER-CAR...s_SM?hash=item2c50acb8a7&_trksid=p3286.c0.m14
I knew a guy in Vermont back in the 70's who did it somewhat. Not a full on Dormy conversion, but he did arrange a deck that sat on brackets on top of the tub. The part over the driving area folded back. He was living out of it while he was building a house up on a mountain.
Didn't take any pictures though, sorry.
The Achilles heel of a lifting top is the lack of insulation in the canvas area. This makes for a night morning interior that is about the same temperature as outside or a heater that is on almost all the time. A well insulated interior has an advantage in sub freezing camping.
I saw this Serle Safari conversion listed at a place in Tennessee that might provide some inspiration.
http://tntlr.com/vehicle1/index.htm