Hello, I own a 1999 NB. I purchased the Miata 6 months ago along with the supercharger kit. Not missing a single part. Comparing to others I’ve seen posted (at least how they look) mine is super clean. Was told I purchased it with just over 70k miles on it. I still have PS and AC. Also used stock ecu and just piggybacked the card into the ecu. Also have CA emissions proof under my hood!