This is a December 1971 built car, so if it was the genuine original GX it should have the following.

Regular sedan grille with GX emblem
Four speed trans
Four speed knob [wood]
Earlier type, flat crash pad dash like Aussie models.
Regular instrument cluster like in Aussie coupes.
GX emblems on the C pillar instead of the circular 'Deluxe' emblems.
GX steering wheel [black spokes with wood rim, later models had black rim I believe]
Regular black console with or without clock

The bonnet is correct for all pre facelift Datsun 1200 models.

There's probably more, but I'm too tired to think.

Thanks to Mikko1200 for the clarification on the mirrors.