Thanks Matt - ive been to a couple o chandleries but couldnt find exactly what im after. The screw caps have it - small as per the main on the 640A - can get the acerbis units as per OEM - but now looking for a source for the filler bung if anyone has any contacts. Prefer stainless over ally if possible.
No petcocks - banjo bolts leading to dry break connectors which will "T" before a fuel tap isolating both rears from the fronts. Will intersect the balance tube between the 2 fronts with a small filter inline.
Now back to the shed.