Looks like a pretty good donor car, currently just over $500.

If you need a HZ era 253, trimatic and other such stuff might be worth a look. Seats look like 63V plus the number plates place it later in 1978 or thereabouts. Good period correct plates too for a NSW regoed HZ.

It should probably be a 3.36:1 diff too, possibly 3.55, just depends on what mm/yy it is.

You might even score some original radiator tanks, factory wiring in the engine bay looks reasonable (not LPG stuff). Looks mostly factory paint, especially engine bay. Might even have some good rust repair sections in it for a ute or van, front panels don't look half bad either.

http://www.ebay.com.au/itm/HOLDEN-HZ...#ht_649wt_1170