This is the reply from Buds:
We don’t have a RHD car here that I could tell you exactly where the hoses go but I did find out that they go on the firewall on the left side of car or your passenger side.
I figured that they'd be on the left side but I'd like to get them in the correct spot.
That’s a shame, if they are happy to sell to fit a RHD, they should at least know how to fit it!.
I guess the only thing would be to try and do a ‘mirror image’ of the LHD fitting and then adjust if needs be. Given these were after market at the time (so I believe), there wouldn’t be any pre-pressed/ drilled holes in LHD model either. Might be worth getting a friend to help so one can look inside whilst other looks in engine bay 😉
Sorry I haven’t been of much help