If you have added bigger tires, front winch bumper, winch, and maybe dual batteries, consider upgrading to the Heavy Duty DII Steering Pump  from M.I.T Automotive to handle the extra stress on your steering box or maybe install one because you want a more durable steering pump than the cheap alternatives. Installation is VERY straight forward and if you have any questions, M.I.T can guide you all the way.

The unit is comprised of 1) custom altered auxiliary bracket, 4) sets of black plates plus hardware, and 1) HD Steering Pump, which altogether seamlessly fits as if it were stock. * You must return your old pump and stock auxiliary bracket. Here are some pictures of it installed on my 2003 DII.

So far I am very pleased with its operation....money well spent!