Does anyone know how I could get Amco floor mats for my Z?

I would think ebay is your best bet. I don't see them often though. I have purchased two sets on ebay over the years. One thing to know though is one of my sets ended up being worthless because the rubber began failing....turning oily. Nothing I could figure out doing would stop it. Ended up having to toss that set. My reason for mentioning...if you buy a set, ask about this before buying.