Thanks for the comments guys........and yes, I still do have a bunch of trunk space. Actually, the "space" concern was key to me coming up with this idea. The only thing I am going to do now is come up with some sort of grill for the sub, so what when I am moving stuff around something doesn't shift and accidentally puncture the sub. Any suggestions? I may just use a traditional sub grill, but I don't know if I have enough clearance - the roll on this sub is pretty big, and it "travels" a lot when it gets going. I may just need to use some sort of spacer - it doesn't look the best, but I don't show my car at all, so the looks are really just for me. haha