Ok, forgot to take a picture of this step but after the fiberglass had fully cured I pulled it out and added more mat till she was good and strong. I then used packaging peanuts to fill it up and give me a pretty close volume of air I needed. Then cut the fiberglass to that line. Made a ring for my woofer and then after playing around with the angle cut a piece to hold it into place. My woofer is going to be countersunk into the ring, and I made it oversized so I can make a cool trim piece to flush in the woofer. Then I stretched fleece over the whole thing. Next is the resin!