As far as I know, having seatbelts at all was a delux option, and they were lap sash type, manual adjusting, and only for the front seats. The back seat didnt get seatbelts in any body type or luxury level.

I am also under the impression that this was a dealer fitted option, so the types of belts were region dependant.

In the Standard verison of the 1k, belts were not a fitted option, neither were floor mats, a heater, or 2 speed window wipers. Im not sure if the standard version was actually available in Australia, as I have only ever seen Delux versions of the body types.

So the sort answer, No 1k didnt recieve retractable belts.

I am planning on making some belts from a skyline fit. Ill post up some pics when I get to that stage...