the powersteering pump from my experience usually leak from the evo area which is on the pressure line attatched to the pump. all the new pumps you find wont have the the evo anymore. they sell an evo bypass pipe if you are using a stock replacement line. they also have a line at the autoparts store that does a 180* turn instead of using the bypass fitting. i would use the bypass and stay away from anything autozone brand. use acdelco when you can. take your time tracing the powersteering leak. some trucks have a small cooler that fits inside the frame rail in the front of the driver side. blast it with brake cleaner and follow the lines
Thanks I'll make sure I take my time and get the new pump if it comes down to that.