So would dealer fitted accessories be included if on the original invoice. Ie you get the dealer to fit sportline spoiler and springs before you collect it?
Work on the theory that if the van was stolen then would you want it back. So Kenwood sat nav - inform, monster mats don't bother. If it is something that would change the driving of the van wheels, suspension then tell them.
When I first insured my van the insurance company wanted to know if it was to include a multimedia unit ( Kenwood satnav,sterio )
Which was itemized on the policy to the relevant value