Just wondering if anyone knows if ARB air lockers have to be ordered with the pump or can I order the lockers seperate and use a different pump like a converted air conditioning unit? Does the whole thing come in a set? I want to order the air lockers for my 8.8" Ford rearend which I haven't installed yet and for my stock front end on my YJ. I've also heard of problems with air lockers in that they can force dirt and water into the axles if not sealed properly (guess I just have to make sure everything is sealed water tight). I want the air lockers so I can lock up the front and back seperately or have both locked if I want. Any other problems people have run into when using air lockers? Is there any other companies out there who make an air locker besides ARB?