Although the HZ Series was released in October 1977, the HZ Statesman was not released until November of that year. The new model Statesman came with Radial Tuned Suspension
and four wheel disc brakes. The styling was not greatly changed, although the Caprice grille was more intricate. In July 1979 GMH
released the Statesman SL/E, which could be distinguished by an egg crate grille and new cast alloy wheels
, although this was really only meant to keep interest in the model while the finishing touches were applied to the extensively reworked WB. As General Motors
flagship vehicle, the Statesman was never referred to as a Holden.