I purchased one of these VWs where the top lifted up from the side and it had 2 beds up there. It was a 1965 and I was stationed in Germany and purchased it from a DOD teacher. The woodwork inside stated Westphalia so I naturally assumed all of it was made in Germany. Only now in 2008 do I find out that the top must have been British.
My personal opinion is that the top is far superior to the front / back hinged top as when it is up, you have more stand up room in the van and there are 2 vents up there. The 2 bunks are folded against the left and right side and open up when you are ready to go to bed.
The Camper also had a GAS heater back in the engine compartment and that made for very warm winter driving in Germany.
The only drawback I saw was the bench seat where you could not get up and walk to the back.
I supped it up with a big boor kit, extractor exhaust, big carb, dual port heads, dual point and it would out run the new 1970 VW Busses. It did not lose the power up the hills like other buses.
I sold it and ran into it in Heidelburg Germany in 1973 and a couple of guys had bought it from who I sold it to and during discussions and telling them about the big boor cylinders thet said they now understood why it ate so much gas and passed everything else. I had put all the original stuff back on it with the exception of the big boor cylinders.
It was Red and White with a side yellow and white attached tent and a really odd looking luggage rack over the driver / passenger compartment.
I would like to find another one of these.
That's my story and I'm sticking to it.