I've got the rear bumper w/ tire carrier, and I've thought about expanding into the old spare tire well, but I haven't taken that step yet. I guess if I can move stuff into drawers, I'd have less need for the floor storage. For now, though, it's the only way I can store stuff out of sight, which is key in my area where vehicle break-ins aren't even considered a crime at this point...
Thanks for the feedback!