I decided I'd rather have more cargo room than the subwoofer so I ordered the larger bin (5LC34XXXAC) and it's rubber mat (68184087AA). There's one connection attached to the bin which is to an antenna receiver/fob sensor for the tailgate. The bin I bought I figure was made some time ago so it might have an older antenna. I switched antennas to keep the one that came with my car. The stereo still sounds fine to me, I don't notice any difference but I'm not an audiofile. I doubt anyone wants to do this besides me and davewg but just in case here's some step by step pics with notes.