Thanks for the confirmation.
At first I thought it must have been a bastardised 77, as you wouldn't expect owners to get it wrong.
Didn't take long to see swing arm, frame and more weren't 77 though.
A lot of VMX going for great prices at the moment, its getting to the point where great deals can be had in Aus and importing isn't so beneficial (given you are up for at least $1200 extra for freight, clearance, GST and so on).