I started out with a carpeted box for a 10" sub in place of the spare tire. I had it ghetto riged with some bungee cords...it was OK...

I want to keep tire and the stock plastic spare cover...so, I made a fiberglass mold of the spare...

I've done some searching...Shawn (psychos2) has some good info/pics...

1. I am wondering about attaching the mold to the MDF...how should I do it? Should I glass the whole thing...or would a few tubes of construction adhesive work?
2. How do I line up the mold and the MDF cover? I'm thinking about placing the mold in the tire, then throwing some construction adhesive on the mold, throw in the MDF, then put the stock spare tire cover back on...
3. How do I get the holes in the MDF and plastic cover to line up perfectly? 4. How should I cut the spare tire cover
5. What is the best sub to use? Pushing about 150 watts RMS...crappy old Dual XPA2100
6. What about a grill gard...how should I attach it...I punctured the last speaker.