I googled before posting for sure.. most of these options are way more expensive then I could justify. I feel like a plastic, doughnut-shaped tank shouldn't be more then $200. I don't need a system to feed the fuel. It would just be for emergency. If I need it, I would lower it like a spare and then use a spout to empty it into my vehicle fuel tank. I may go with another option (such as that fuel caddy) but the point in posting this question was to figure out something to do with the empty space where my stock spare tire was. In all likelihood, I will probably just do two 3.5g Fuelpax in that spot and call it good
That spare wheel replacement propane fuel tank is pretty neat, (although pretty pricey). I wish I had known about that before I mounted my manchester underneath, although I still may have gone with the manchester. I also wonder how you get it filled. Do you have to figure out some sort of remote fill port?