I have a buyer for my car, but removed a few parts before the sale.
GMPP cold air intake: Installed for 3 months, includes all mounting hardware, original instructions, ready to install. $450 from GM, cheapest I found was $343 plus shipping from GM Parts direct. - Sold
Covercraft Weathershield HP car cover: Never used, only tried on the car once to check fit. I thought I was going to be parking outside, but made room in the garage so the cover went unused. I also purchased the extra gust guards that will go with this. New: $264.19 with gust guards. Asking $200