Rear bumper bracket question

I am making a custom rear bumper for my xj and wanted to know if there are any diagrams for tie in brackets for the rear bumper like i have found for the front. I would like to have them run down the side of the unitbody and tie in there for more strength. Anybody know about something like this and where i can find it?

Here's the diamensions for the stock nutstrips.

http://www.naxja.org/forum/showthread.php?t=983110


I used these for some guidelines when I built my rear bumper. An awesome way to make beefy XJ rear bumper mounts is to run some 2x4 rect tubing down the inside of the framerail. Here's some ideas for you:

http://www.naxja.org/forum/showthread.php?t=993533