It is more than likely a Sandman by those tags but it is near impossible to tell on a HJ Holden ute. It looks like it has had another box like a toploader in it and the hole has been welded up and cut for that Speco shifter.

The tags have been removed from the body, the body tag heavily cleaned and all put back on, so it may not be the original body to the tags.

The Holden Sandman ute was dropped on 1/3/76 to, so if this one is a Sandman it must have been entered into the schedule prior to the cut-off date when they could no longer be built. I just had a look in the database and it is the only HJ Holden Sandman ute I have recorded past 3/76 - the only Sandman utes after 3/76 I have are all Kingswoods. HJ Holden Sandman utes are very rare overall, I have bugger all recorded - most HJ Sandman utes are Kingswoods by far.