Most unlikely. I've never seen an Acacia Ridge Sandman without XX7 (or later XU3) outside of HQ.
Door switches are irrelevant in HJ.
As it is a 3/75 or 4/75 complaince, 2200kg is normal for all HJ V8 utes and vans.
To be a HJ Sandman it has to have body plant fitted console brackets and full length headlining attachment strips, which it most likely has neither.
What is its chassis number? Should be BHJ and either high 10xxx or low 11xxx. If I had to guess i'd say pretty close to BHJ11000B but they are not always as linear as predicted, so sometimes inter and extrapolation doesn't work.