So I have been bad about posting update, but I have been busy and it took a while for me to figure out the new photobucket site. I have the brackets fabed up along with the shackle mounts. The bracket is a basic L shaped design that captures the three factory rear bumper bolt holes along with another two holes that were in the frame. I figure 5 grade 8 bolt that are 1/2" on each side should be pretty solid. On top of that, the shackle mount will run from the mounting bracket through the bumper. The shackle mount will be welded to the mounting bracket, the back of the bumper, and the front of the bumper. Overall, it should be pretty solid. On to pics:

Driver side mount

Passenger side mount

This is how the bumper will look with the shackle mounts.

A cool shot of me welding up the mounts. A little more welding, and the mounts will be complete.