That statement is a bit ambiguous in the context of the question.
Let me clarify.
No, all models did not have the front indicators that shamus11 is referring to.
Regarding Australian 240z's. They did not have the rear side markers, or the side marker type indicators.
The 240z guards didnt even have the cutout for the side indicators.
They had the indicators with clear lenses in the lower panel under the headlight bucket. Some time in 73 euro style indicators mounted to the bumpers were added
Then with the 260Z (1974) the side marker type indicators were added.
Sound like your car has its original guards shamus11
No you dont have to have them (No legal requirement for them for your year of 240z).
Lots of 240z's that have been "restored" have used guards from 260z's which have the side indicators, or maybe you've looked at alot of pictures of US cars or late 73 cars.
No Australian 240's or 260'z had the rear marker either. No legal requirement for that either.
What year is your car?
The first car is an early 240z, then theres a 260z 2+2, 3rd car is #803, green is a 73 (with euro style bumper indicators). Cant recall what the red car was.