Alright!!! I spent 6 hours today working on the back. I am 95% complete. I am going to strap the 6x9s down instead of mounting them. They will sit at the front end of the boxes I made. (not shown in photos in their final location) There is no room in the back, and they are too big for an overhead mount. So, under the boxes will be the drink holders. The boxes came out even better than I thought they would. The CO2 bottle fits like a dream. I found my CO2 extinguisher in the garage, went ahead and mounted that. The Tow strap will be strapped down as well. I fit the exhaust adapter for my jack under the rear potion on the passenger side. The amp mount came out good as well. I am pleased with the results. Here are some pics: