Lonesouth, I actually got that one you sent with the fan off with the tool I bought at autozone. The tool I bought (big ass wrench) says it doesn't list the 5.0, but it will work with no problem. Keep in mind that the fan nut goes counter clockwise to loosen. In other words if you are looking at the fan as it's mounted on the motor then the fan goes to you left to loosen, it's a bitch till you get it moving and then it should get easier and spin off.
Ben