Ok, this is what you need to do. If brand name car audio is not as important as overall build and sound quality, get a sub from one of these couple of sources...
www.adireaudio.com -- A single Shiva should be sufficient. Very high quality woofer.
www.stryke.com -- the PL series subwoofers are arguably the best SQ subs on the market at any price. The SAL series are similar to the Shiva. The PL series comes in a huge variety of configurations. There is bound to be one that suits your needs.
www.partsexpress.com look up part # 295-185. It is a clone of the Shiva but sometimes at a better price.
All of the subs mentioned will destroy anything on the market at the same price. Outperform almost everything at twice the price, and in some cases equal or outperform stuff at three times the price.
Forget the Audiobahn if you aren't interested in having a brand name sub but rather in SQ per $$. You won't find anything on the market that will compete in the bang for the buck.
Dave
