i just rego'ed my 66 in VIC, janurary this year.
i sent the car to a RWC shop, who gave it a RWC. i noticed on the web that i should fit RH drive headlights, so i did before it went to the shop, so i don't know if they would have picked it.
They let the rear seatbelts go (mine doesn't have any) as they were optional in 1966.
it passed RWC and went to vicroads with red flashing indicators, left hand drive, 4 wheel unassisted drums and otherwise as it came from the states