Just had a cracked windscreen on my GT-R and got my insurance company to confirm in writing that replacement under my policy would not effect my NCD or premium.
The only issue that I had was that Autoglass wanted to fit an after market Pilkington glass, however I again contacted my insurance company and asked them for a Genuine NIssan OEM glass and that all I wanted was my car restored to its original pre accident condition.
I also asked for a genuine OEM glass moulding and genuine OEM gel pads for the rain sensitive wipers and auto headlights, and again they agreed.
Job not done yet as there was a delay with the parts, but expecting it done within the next 5 days.