Thanks Chris. They are definitely M7, the square M5 nuts are already installed in he head light buckets.... So the M7 must go somewhere else
hmmm, the only other location I can think of is on the tension bars for HP pump and alternator - but you would not have removed these from what I can see, and they have a slightly domed side.
Searching text in the parts manual there are only two references to 'square nut' the M5s on the headlight bucket and a fixing on the distributor -again you wouldn't have removed.
Curious
Were they caged on the bumper bar ends or the metal front air intakes
Cheers
Chris