oh fuck it.
I looked at the injector connectors ffs! they are ofc greys.

if you follow the vacuum pipe from the dv you can see a short piece of it go further than the plenum chamber, into a black hose and up past the battery. behind it there is a hole in the torpedowall (don't know if its the correct word in english) where the speedowire goes on LHD cars. gr8 plase to run a boost hose to a gauge