Hi, Before the parts get discontinued, I would love to buy extra parts that I might need for the future. I am looking for below in particular just for the aesthetics: Name / Part # Full enclosure / 922-9631 Access Door / 922-8902 PCIE slot cover / unknown (does anyone know?) Now I have a few questions: 1) Where would be the best place to get Mac Pro parts (brand new, never used)? 2) What's the PCIE slot cover part #? 3) Would there be anything else that I should buy in advance in case of any failures in the future? (Thankfully, my Mac Pro has never had any issue for about 7 years now. Even my EVGA's GTX 680 has no issues for 5 years). Should I look for after-market-irreplaceable parts? What would be those? Thanks a lot.