Geesh, packed in you were! Fortunately there were no screeching stops on a sub...lol. I'm planning to make it adjustable. One high level for sleeping and cargo underneath, and a lower level for sleeping with cargo off loaded. There definitely will be no straight edges on the sides and it's going to take some fancy fabrication to make it work. I would like to use aluminum but may end up using wood. An additional complication is that I have stereo subs in the back, rap no, blues and country yes...lol. It's going to take some effort to get it all to work but it's doable, kinda. Anyway it will keep me busy and out of trouble for a while. Cheers!