The modified vehicle report form should be completed with all modifications to your vehicle. Ensure that you do tell us ALL modifications, as any non-disclosures could mean that a claim does not get dealt with, or extra premium is added to your policy. In extreme cases the Insurers could null and void your policy. Ensure that you complete the engine and chassis number, as your Insurers require these. Please also ensure that you sign and date the form on the second page.