Both Datsun 1000's & 1200's use their own version of the 56 gearbox. It was updated for the B210 [120Y] & became the 56A gearbox. This was carried into the B310 [Sunny] models in Australia in models that used the A12 engine.

The body style did not matter, the gearbox model was directly linked to the engine capacity.
Australian Sunny Sportwagons used the A14 & A15 engines & the gearbox that was attached to these was the 60 series.