Very unlikely. As far as XX7 goes Dove Grey trim was only available on HJ Kingswood until about 8/75, although the odd bit was used on Holden for 19V trim (headlining and sunvisor) again up until 8/75. It was also used for the headlining and sunvisor for 18V trim on Kingswood if neutral headlining was optioned until 8/75.