I don't want to sound like a snob or anything but frankly I think Odlorah should just forget the whole thing. Between need ing a claw for the derailleur, the brazeons/clamp for the shifters and the limited range of the SuperBee I think he is asking for trouble. It almost sounds like he is trying to put a 280Z transmission into a Pinto or Vega.
I think the best way for the Odlorah to imporove his shifting on that bike is a shimano or Sunrace hyperglide style freewheel (FW) and Tourny derailleur. between the shifting ramps on the FW and the floaring pully on the derailleur I think imporve the shifting without fiddling with attaching brazeon shifters to a clamp that may or may not fit the downtube (DT) which may be oversized on this.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk