Yes, the sports steering wheel was factory option NK5 for the WB.

Strangely even though it was standard equipment for HQ-HZ GTS, SS & Sandman, it was not available as NK5 for those model series. Any non GTS, SS or Sandman wheel with a sports steering wheel was fitted after it left the factory, often by the dealer like my BO6.

I find the badge change quite strange. The lion with no bottom didn't appear until 1981 or 82, so was not seen in any HZ or early WB.

When GM-H change a part in any way, no matter how minor they usually give it a supersession part number.

They were going thru a bit of an upheaval in those days, so anything is possible, but it could be that someone in spares just swapped the insert for their VH or whatever, because they liked it better.

Dr Terry