Where in Texas are you located? My shop is north of San Antonio, and all I do is work on these IDIs.
You will need a power steering pulley puller to remove the pump. Typically I just remove the whole accessory bracket in the truck and work on it on the bench. I remove the pulley, remove the three bolts behind the pulley, remove the pump and install new pump. I press the new pulley on, pressure wash the area around the pump while everything is off, replace lines if needed, then install the accessories and connect the lines back to the pump. I like to fill the reservoir with atf before starting the truck and spin the pulley by hand for awhile to help prime it.