Skid Plates
I bought a stock one for my transfer case and it seems to be as thick as hell. You can also get one for your front suspension too. I think they're about $130 each.
http://dodgeparts.mopar.com/dodge/ram-accessories.html
http://dodgeparts.mopar.com/dodge/ram-accessories.html
I believe the OEM ones are pretty much the heaviest ones you can get, unless you crast something up on your own. I picked up skid plates for my '01's transfer case and fuel tank out of a wrecked truck from a junkyard.



