Weekend Warrior ramp question

I had a spare tire mount on a older MH I had that was attached to the square bumper. There was a door that opened behind it on the MH but the mount had a lever that you pull and the tire pivoted down to the ground. That type of mount would work on your toy hauler too if you have a 4" square tube bumper. Here's a link on ebay.

http://www.ebay.com/itm/Ultra-Fab-Universal-Rigid-Spare-Tire-Carrier-Bumper-Mount-RV-Travel-Trailer-/112288875120?hash=item1a24f04270:g:MVgAAOSwhQhYxcQb&vxp=mtr

If it doesn't work, use the search words, RV bumper spare tire mount.