Here's another view of the cable-type linkage:


And don't forget the Tech wiki article: Hitachi Twin Carb

try fabre australia at lakemba,they are an su agent,as well as lots of other good stuff.i talked to someone there a few years back &
they were reproducing some parts for the
hitachi carbs,because basically there weren't any
anywhere in the world.also,try some british
sports car wreckers,they usually have heaps of
bibs & bobs floating around,they might have
something that'll work.

Would Nissan still have small parts for these do you think? if i was missing some?
if not who would be the best people to ask?