I am looking at using aluminum to make a rear enclosure to replace my tailgate and door for my Wildernest. The idea is use aluminum angle/square tube/ sheet to make it, and epoxy/rivet it all together. This thing will have to be fairly strong, but still take some of the torsional twist that will come from being on the back of a 4x4. It will also have to withstand temps from -20 to 110. What has everyone used and had good luck with? I have seen aviation epoxies, but they go for an obscene price! Suggestions and experience would be greatly appreciated!