That is what I'm trying to avoid. I have enough stuff to fabricate on this car, build a sub encloser is not something I have any interest in doing. The loaded enclosure Power Acoustik sells is real nice, it's just too long. The pioneer enclosure is slightly smaller in width and length that the one I have now ( its much thinner though). 13" is a moster of a subwoofer. It would be cool if I could find a small enough enclosure for that PA woofer. And yes, once you have bass, it's very hard to live without it.