just had a look at the 3 suzuki taps i have, 2 gsx ( gs ) ones ( one at 44mm and one at 50mm ) plus a 1200 bandit one. and the diaphragm's are all the same. looks like suzuki use the same type and size in a lot of their bikes.
find a tap with the outlet facing the way you want it and then just turn the vacuum plate to the position you need, its square so it can be repositioned
i know theirs not a lot of bandit lovers on here but they are starting to go up in price, especially good clean low mileage MK1's. the 95 ( some call pre production) bikes as i said are pretty rare. its a shame its in such a mess as it'll cost a few quid to restore unless you can do it on the cheap.
its not a cable taco !!!!! even if it was a dry cable it wouldn't run slower than the drive from the cam unless the square ends where rounded, or the drive gears where worn.