Does anyone know the likely cost of adding PPP to my MY03 WRX with Admiral insurance?

I'm 29 with full NCD and a reasonably good SE postcode.

Don't know about Admiral but it cost me no more when adding the PPP to my MY03 STi with Privilege.

They asked me for an extra £120 for 10% power increase. The did not reconise the ppp.

Don't forget to mention the new exhaust system as well as the power increase, it's the more obvious of the modifications.