So I want to upgrade my substage in my car. I currently have the pos stock 8" sub in the rear deck. I don't really want to replace the sub and run in to rattling problems in the rear deck or not be happy with the output i get from it. I was either thinking of doing fiberglass boxes in the wheelwells or do an mdf box with an aeroport firing directly through the stock sub location. I was wondering what you guys think would be the best thing to do in this situation. Any suggestions are welcome.