I'm also doing the Jeep GC power steering box swap. I started a thread about it in the street section. The link is here. It basically gives you 12.7 steering on the cheap. Ill easily have less than $150 in this and have some tight modern steering in the end. Bolt in deal.
Here's a link to the thread.
http://forums.maxperformanceinc.com/...d.php?t=685111