I can tell you right now, a bass tube is going to be WAY CHEAPER then the stealth box. Stealth Boxes are $$$ and will require an amp (even more $$$) but will sound 1000X nicer then any bass tube.

One thing to watch out for if you go the sub/enclosure/amp route is the enclosure volume for subs you buy at BestBuy / Circuit Shitty. Unless you buy the high end ($$$) models, most of their cheap subs require 1 cubic foot enclosure or more.

In contrast, quality subs (I like JL personally) cost a bit more, but only require 1/2 or even a 1/3 of that volume. I had a JL AUDIO 8W3V2 in my S10 and it SLAMMED....only needs .33 cubic feet so its enclosure is tiny.

For less then $100 you can find MTX / Clarion / Kicker / Fosgate / Pioneer / Directed amps (mono) on ebay.

-sky