I have viewed this Sandman at NSW All Holden Day back quite a few years now. It has appeal but you would have to leave it pretty much as it is to make any sense monitory wise.
Otherwise it's a full strip and rebuild and that ain't cheap. If you added that figure to the sale price you would well and truly exceed it's value/over capitalise. Interesting for me as it was a Wollongong car that I knew of as a young fella.