The NUMBER ONE reason for warped rotors is that one or more corners of the truck have binding brake hardware. Regardless of what rotor you use, or pad, you HAVE to correct the underlying fault, PERIOD.
A thorough inspection of the components and how they slide/ fit is in order, AT ALL FOUR CORNERS.
http://www.dieselplace.com/forum/showthread.php?t=313310
Search "heymccall" on here or DP