What is the difference in the pumps for power steering/hydroboost? I am getting ready to put hydrobooster in my k5 and I need to get the pump. Now, my 88 1-ton has a regular looking pump where you have to fill it at the pump and the parts trucks I've been getting hydroboost parts from, has the remote reservoir. Is there an advantage (besides ease of filling) to the remote reservoir over the "other" pump? Also, are the mounting brackets compatible between the two different pumps?