My first system was a Boss amp (150wrms bridged) going to a super blue 10" in a bass tube that was held together with duct tape. Headunit was Sony and this setup was in a 95 Ford Aerostar.
Funny thing is this was 1999. Fast forward to today, the amp is in my girlfriend's Prizm on a Punch Z 12" and it sounds good to me. The headunit is in my sisters car, still working flawlessly (if you believe that).
Audiobahn... I've heard it, not too bad. I do think if they took some money away from the design and put it into the performance, it might make a difference. But who cares? :-D Better than two 15 inch xplods lol (my second setup)