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Nothing about these part numbers on the internet. By the construction though, it appears to be a Simplesoft / XP unit. I wouldn't worry too much about what you read about particular adapters and the issues other people have with them. Canbus can be complicated and is rarely engineered to a standard (electrical standard yes, interfacing with the head unit, no). I would just search for a Mazda unit wherever they sell these and have a conversation with the seller about your needs / concerns.