I agree, go with jeepin outfiters.
About rustys shims:
I put them on when i did my lift kit. About 10 months later i was driving to a lacross game and i heard this wierd rattling. It sounded like my lience plate slaping something. I pulled over to check it out and could find nothing wrong. About that time i noticed that the back end felt funny. It felt like the axle was rolling when i got on the gas. Well i drove around for a couple days and it didnt fix itself so i desided to take a look under it. my u bolts were so loss you could jiggle them. After further inspection i ffound that the shim had broken in half and fell out.
It messed up my leaf pack when it went too. I bet it messed up anything that was behind me too
it broke the center pin and twisted it. I ended up just taking the other side out and putting it back together. moral of the story is dont buy rustys cheap, low quality parts. If you do, dont get the alloy ones. Pay the extra $ and get the steel.