I have one from the rs owners club but couldn't use it on my insurance lol
Rs owners club told me they can only value the car as a saff cosworth not what's bolted to it others may say other wise but I've over 15 grands worth of receipts on mods but still they would only value it at 8 grand!
But need to insure did it on mods so insured it at 12 grand not using the rs valuation but its still good to have that bit of paper saying its worth that in there eyes