Loose PS Box??

Instead of replacing the k frame, weld it up. Your next K could look the same in short order. Around the steering box is well known for it's floppiness. Especially with today's radials.

Welding it up is part of the recommended K-frame reinforcement, along with 1" lap welds all the way around the perimeter, cleaning up the various sloppy welds, and welding up the bottoms of the LCA's with "1/8 flat stock.

Test it out, have someone steer left and right, and then with some authority, see how much the box moves. :)

Another good article for firming up your steering:

[ame]http://www.moparaction.com/tech/beep/PUMP_IT_DOWN-re-v1.4.pdf[/ame]

Hope this helps!