Looks like a very neat, clean Sandman interpretation that would make a great tow vehicle. Leave as is (i'd add U17 instruments and factory air) and enjoy. You wouldn't buy a body as good as this (if it is as good as reported) and build it for the starting price, even at $10-$11k. As it already has a bulletproof box for a tow car a VN-VSIII EFI conversion would be easy too (WB's convert slightly easier as they already have the right radiator and shroud for a VN-VSIII engine).

http://www.ebay.com.au/itm/WB-HOLDEN...item231bd459b9