Is it effective to fiberglass part of a sub box if you were to put it in a spare tire well or something. My friend did it in his 300ZX and it's sounding very good with no rattles or movement. I was thinking of doing this in my Del Sol, molding the fiberglass around to replace the storage bins.

Also while I'm on it, does anyone have an opinion on MB Quart speakers? I'm looking into the Discus or P series components as they have frequency ranges of 40-32000hz. That's a much larger range than my infinities. I'd also need a better 4chan amp to run them. What company makes the best 4-chans that aren't going to break the bank? I'm not talking 70 bucks, but I'm also saying under 300 bucks or so.