I found a receptive ear at Lant Insurance when I plated my M151A2. The lady I spoke to was Doreen:
doreen@lant-ins.ca
I forget the sequence but I needed to have the vehicle safetied, then registered and insured, or was it insured then registered. Either way, she asked for copies of the bill of sale and the inspection, as well as photos on four sides, with the hood up and the interior. As long as I have a daily driver, the policy is about $150.
Your LSVW and my M151A2 were both sold off by DND with limited paperwork. Mine was rebuilt in Alberta and has a foil replacement VIN tag. It came with a mistake on the previous registration which between myself, the inspector and the insurer. The licence bureau couldn't record it by make and model, so the certificate is truncated to an M15 by AM General. Your LSVW will be something similar.