If it is a HX Holden ute or van with 18V trim it is a Sandman as long as it has an ADR plate. 18V is a Kingswood trim and the only time you find it on Holden lux level is in a Sandman OR a vehicle built for NZ (no ADR tag on these).

So as long as the plates are original to the body/rails you have a Sandman.

PM me the ID if you like and i'll check it is all aligned.