Id declare the lot m8.chances are they wont bat an eyelid.I declared a 200 bhp chip,-31 actuator,magnex pipe,koni adjustables,poly bushes and 17" alloys.They wernt interested (liverpool victoria).They said if I had bored it out then they would have wanted more.Even got the bird to speak to the underwriters and they said the same.If you dont declare and have a bang and they find out its bye bye cover.They will look for any excuse not to pay m8.