First off I just want to say thanks for all the quick responses.

I had a feeling someone was going to suggest the Total Chaos idler arm. I was checking that out. If I can get the money together and depending on how much the rest of the stuff is going to cost me I think I am going to look at getting that one. I plan on having my truck a very long time.

As far as the calipers go, they quoted me $688 to replace both calipers and rotors. So if what ELEET is saying that really isn't bad. I still think I am going to look into the Marlin Crawler ones and might just go with their rotors too.