Here is a great HZ tonner. It'll be rust free where it lives. 4spd too and cheap:

http://www.ebay.com.au/itm/HZ-ONE-TO...item3f170959df

Another really good donor HZ wagon. 253, 4spd, factory air and almost certainly steer too:

http://www.ebay.com.au/itm/Holden-HZ...item41656d9062