As a result of this conversation, went and picked up the 3x4 rb from the bookshelf in my living room. It's beautiful. A timeless design. The predecessor of the rb67.
Never, never, never will I butcher this tool to make something more 'useful'. It has its original leather hood, the 150mm Tessar lens; I have the Graphics 69 on the back (and a boatload of Graflex film holders).
Butcher your cameras, as someone pointed out; they are not that rare. I'll keep mine as a tribute to Weston, and a hell of a fine camera in its original form. And... it's older than my parents (May they rest in a long deserved peace).
tim in san jose