Looks like Luke (4X4Labs) is making his DIY rear bumper kit for the 55, too. This is a great way to save some money by buying what you need and doing the welding yourself.
http://www.jonesysoffroad.com/shop/...land-cruiser-double-swing-out-diy-bumper-kit/
http://www.jonesysoffroad.com/shop/...land-cruiser-double-swing-out-diy-bumper-kit/