AGR makes a replacement pump. It is not one of their super pumps, but is much better than the stock pump. Mine was about $165.00 a couple of years ago and works great.
Mine is a pita to turn, i have 35's on stock 04 wheels. it makes it real fun
to back up to a trailer and you need to move over just a bit. you basically have to stand on one side of the steering wheel to get it to move. i hate it!!!!!!!