This is my first post. I just picked up my 2012 Mazda 5 touring last month. It’s got 89k mi and needed a new tcm. I’ve done all the repairs and wanted to build a cargo cover and fit a pioneer shallow 10in sub box that I already had from another car. I built everything out of 3/4 Baltic Birch. The cargo cover is covered in boat carpet and hinges up to use the middle seats. I still have to wire everything.