If he is then Im not - these were standard OE parts that came from the manufacturer and dont need declaring any more than the interior colour does.
However I also disagree with ZMANALEX, anything that is obviously non standard should be mentioned even if it doesnt add power. There was a story a couple of years ago about a guy with a Celica that didnt declare his blow off valve and the insurance company forfeited because if it, its not worth the risk.
If in doubt, ask the insurers
EDIT: Found this one on Civiclife:
Had a car with alloys and a stainless exhaust.
Got pulled.
Copper asked if mods declared.
I said yes, he said he'd check as didn't believe me.
Got letter from cis, saying that they had been made aware that my car has mods, and as I didn't meet the criteria they cover for modded cars, my insurance was voided.
Received court summance for driving with out insurance.
Got found guilty.
My punishment.
9month ban
6points
£360 fine
Woohoo. When I returned, my insurance quote had gone up 5times, and stayed like that till my points vanished.
Cost me about 6grand in total for not declaring mods.
Now I declare every ****ing mod. They even know I've just changed my gearknob. Lol.
Holy crap sticks!