I had my 4 inch suspension lift added and was having some major vibrations due to a high pinion angle. I called up Andy at Iron Man 4x4 Fabrication and he was able to have these beefy rear adjustable upper control arms fabbed up and sent to me on Wednesday. I highly recommend his beefy products and he has excellent customer service. You can check out his website for his upper control arms. Hope this helps people who have the same problem I did.
Ill post some pics up when I can.