I'm certain a horizontal mount wouldn't work - just too much weight. And it would be way too low unless you were to mount it on the tailgate. There are swing-style spare mounts but I'm not sure if they would fit a flat fender or if they are available for a fuel can and the spare. Tumbleweed just built a beautiful rack that holds both - can't remember just where I saw it, but it had to be here or on the 2A.