I replaced the one on my 10 it's pretty straight forward. Are you keeping your outter tie rods or replacing also? Basically you disconnect the power steering lines disconnect the steering shaft in bolt it from the frame and pop off the tie rods at you spindle. Once the old unit is out make sure you get the lengths of the tie rods as close as you can to make the truck driveable to the alignment shop. If you don't have a Chilton manual get one well worth the money if you plan on doing some of your own work. It gives you all the processes and all torque specs. One thing I will tell you is do not use Power steering fluid these trucks take ATF4 in the power steering and I almost trashed my pump with power steering fluid. After you have replaced the rack make sure to leave it on stands when you start it up so there is no drag on the wheels (that is what saved my pump) and look up the process for getting the air out of the system, it was like turn the wheel so far then back ECT don't just go to full lock to full lock. Sorry for the jumbled post I was in a hurry writing it hopefully it helps.