This probably isn't the most popular car for a camper conversion, but it ended up working well for an extended road trip and weekenders. Figured I'd throw out the idea for anyone looking to do something similar. Final dimensions allowed for 47" wide overall. The 36" drawer slides seemed to be the most expensive single part, found a pair for about 100 on amazon. When extended I use cargo straps hooked onto the headrest supports to support the platform. Made me a bit nervous at first but it has proven to work out perfectly.