hey-
i'm currently using a LC Eng. dual composite clutch, and frankly, would not spend the money for it again. it is extreemly positive, and will not slip, but i don't think it's really neccesary with the dual cases.
my truck had 35's and 4.1 gears on it when i bought it, and the stock clutch (115000 miles) would slip badly in low range. i thought the "super clutch" would be the answer, but regearing and a crawler box took care of that anyway. when i replace the clutch again, i'll be going back to a high quality stock type.
later