Build quality is great, fitment is perfect, easy to install (with a few tools and a little bit of experience) and sound is incredible! The fact that with such a small seat lift you're able to fit full size 12's (vs shallow mount 10's or 12's in a sealed box) makes a world of difference in both SQ and SPL. I installed Kicker Comp R 12's in mine, wired down to 1 ohm powered by a CXA 800.1 amp and it flexes my headliner at the windshield when cranked up. Extremely satisfied with my purchase and decision in the setup. If you're trying to decide between this and a loaded enclosure, go this route for sure! Less draw on your system with arguably better performance.