The HJ continued to use the same body as the previous HQ model but used the new front sheet metal from the HJ. The cowl, dashboard and interior were all updated in line with the new model and it could be optioned with both front and rear spoilers. The 350 Chev engine was discontinued making the HQ GTS 350 very sought after by collectors due to it's rarity.
Very few HJ coupes were ordered and the aussie tradition of high performance four-door V8 sedans continued with the HJ. The HJ could also be ordered with black out stripes on the bonnet but in a new wider pattern than the HQ.