I'm very cursors as to how we came up with a 1974 model as that looks more like the series 80 model Monaro to me.
Quote from OP:
Engine is Series 70, 2 stroke, Mk4.
I'd like to know what the engine number is to get the date of it.That would be good to know.
Agreed, but the carby/snorkel setup is consistent with a Series 70 too.