I will post more of the Z tonight. As for your enclosure, I am confident we can get something together equal or greater in structer and class. Lemme know when you get materials around, and I will help yah through "playing" with the glass/rosin.
I found a project to try fiberglassing on. I'm going to make an enclosure for my sons Power Wheels Escalade. I have most of the materials, just have to pick up some sanding blocks. The speakers that come on it are fake but underneath there are some 2.5"s. My goal is to pretty much replicate this back panel minus the cubby hole and mount some real speakers.