I bought an extra set and took off the originals with tires & put them in an ac controlled storage. For what these cars are going for now days and desire for originality 8k is worth it.
I have an extra front bumper which I bought years ago as a spare. Believe at the time it was little over 2000k. Agree the GT guys should be your contact point. Glad you are ok.
I would be concerned about the impact of heat in that crevice . You have the dry sump oil bottle within inches of that area. The times I have opened the clamshell that area was scary hot.
I believe the low mileage factor will wane off as the car gets older and classified as vintage. Ferraris still take a big hit after 10k,but not the older special series.