I have done a mud map of the grommets on my RHD as I am still awaiting my engine to come back and I have plenty of room to access them.
It’s a rough pencil drawing at the moment and I will need to draw it up in pen and try and get all the part numbers for them.
The rectangular looking bit on the left side of the drawing is the brake booster/master as it is not marked.
Please note it’s from a late ‘66 230 manual, so other years may differ.
Doug