Brake servo/Booster vacuum line connection

[stickandrudderman]

I am now in a position to convert LHD boosters to RHD but I have limited core stock and what I do have are missing the bayonette fitting for the vacuum line.
Part number is 0004303681.
If anyone has either this fitting(s) or old failed boosters that they no longer require I'd be happy to give them a new home.
I am in the UK so shipping entire boosters might be expensive but let's cross that bridge later.