Personally, I'd build or get one that swings from the drivers side and doesn't go all the way across. The reasoning for this is the passenger side door opens first, and probably something you open a lot. You don't want to have to swing the tire carrier open every time you need to just quickly grab something out the back of the truck. Swinging from the left and only having the swing half-length allows you to open the door without having to swing the carrier open.