full insurance payout, in case of write off, after 12/12 old

[carspath]

Help please re the names of any insurance companies that will pay out the full purchase price of a boxster , once the car is past its first birthday.

I bought my 981 S in june 17, and insured it with A Plan , and the policy states that the full invoice price will be reimbursed in case of a write of , during the 1st 12 months

I would like to have this , for the following year or 2 , and would be grateful if you could tell me of any insurance company which will extend this privilege past the 1st 12 months

thank you