Had a chat to Vehicle Standards here in Tassie today who really good and rang back twice for info. I'm sure they still had no idea what a Dirt Squirt or Road Toad was.
End result provided it meets the regulations of the day ('73) all should be good, though he couldn't tell me what the regulation of the day was??
I imagine the usual...Headlight, Taillight, Indicators, horn and mirrors...then it gets murky. Rear only parking light, Speedo, Chain guard?