Re:
I've previously tried disassembling the band on version to fit onto standard campag-fit bosses and couldn't do it. The main problem was the levers are too fat (or bosses are too short) to allow you to fit all the washers and make them work properly.
Old Ned is probably right - there may be specific bosses.
Btw, they were the best working levers of their day. Far better than the simpIex/mavic sprung version. I have a suntour retrofriction bar con on one bike and its great - easy to pull back and no cable slippage the other way