<font face="Comic Sans MS">That truck can't really do rock crawling in it's stock form anyhow (due to the IFS), so you should still be ok with autotrack.
To improve handling in mud, your best bet would be going to some M/T style tires, such as the Cooper STT's... AT style tires can't hold a candle to the MT style in the mud... AT's don't have the ability to clear mud out of the treads without spinning them very fast. [img]/wwwthreads_images/icons/crazy.gif[/img]
ORC Land Use columnist:
My February article on ORC
(I'm finally back)