Thanks guys, I will have to bite the bullet and get a holden historic report done, to find out for sure......I am pretty certain it is a Sandman, as all the features so far suggest so.
2 seat cap
WM80 Base model not Kingswood
Floor Shift, Console mounts
67V Trim code Sandman or Kingswood
Door light switches
Lower GVW for 6cyl
Matching numbers Pagewood Sydney example