If i don't end up doing a slimline Sub inside the spare, I was thinking I could fit 2 JL Audio 6W3v3's in the compartment where the factory bose amp and such goes. Trying to figure out what this little black thing with wires coming out of it is, and if it can be relocated to the spare tire side of that bar to make room for a box? I've got my Boston Z6's with 400 watt RMS to each side going so i'm really needing a sub now :P