i recommend you do a forum search and maybe check out the tech articles... gotta be some info in there. Offroaddesign and rockstomper.com both have x-over info/product pages as well.
I currently run rockstomper, but I am going to switch to a behind-the-diff-tie-rod arrangement soon. If you are interested in my rockstomper steering arm, it'll be FS for significantly less than rockstomper sells it for new... PM me if you're interested.
j