Guess this kinda comes under security.
Just rang my insurence company to declair my bucket seats and harnesses, and have been told that unless it effects the vlaue or performance of the car i dont need to delcair it.
This sounded too good to be true, so i got him to go check, and yes i only need to declair mods that effect the value or performance of the car
The company is CIS - Co-op Insurence