I'm looking at starting to design a storage system for the back of my 1997 RR 4.0. I'm looking at two slide out drawers with a fridge and a camping cook box ( 23" x 23" x 11") on slides above. I can't make it absolutely permanent (bolted into the floor) as if necessary, I'll need access to the spare tire underneath. The spare tire could ride on the top of our Autohome Extreme rooftent during trips but I'd want to be able to remove the storage system when i'm outside camping season. The tire up top will also add to top heavy balance. I'm also considering taking out the rear seats and building another level area from the back of the storage system to the rear seats for the dog and any other loose gear. Anyone built something like this and have photos to share. Any ideas, suggestions appreciated.