FWIW, I did the Pyle 6" sub install last weekend. It might fit without trimming in the LX, but in my '04 LC it required trimming. The sub has to sit flush in the housing; if there is a gap between the frame and enclosure then you have the same issue as having the foam blown out - air is escaping that is not supposed to escape. I used a dremel with a metal cutting wheel to trim all the way around the edge, about 1/4" in. Didn't take long, was actually a bit fun, and fit very nicely when I bolted it in. As noted, there are four wires to connect: the red and black wires are negative the other two positive. Does it sound great? No. Don't kid yourself, no 6" sub, much less a $12 one, is going to win any bass competitions. Does it sound better than the blown sub it replaced? Yep. Plus, it was worth it to take the panel off so I can see how much space is back there as I contemplate my drawer and accessory wiring setup that's coming soon.