Also check out IRO for steering. I use their setup on my trail rig and it works fine. I bought mine used, and its the first gen of their steering. The newer one is refined. In what way, I'm not sure.
http://www.ironrockoffroad.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=IROR&Product_Code=IR-TOTKS&Category_Code=XST
I have also used the already recommended U-Turn steering system by ORO. Very nice complete bolt on.......if you have deep pockets!