100 psi should work just fine. It really isn't hard, just tedious. Its easiest to do one seal at a time so you don't have to worry about losing/mismatching keepers and stuff. Not sure how much room you have in the engine bay, but if you can get one, the type of spring compressor that has a couple claws that grab a coil towards the bottom of the spring and screw tight to compress it make it easier to do it on the car as opposed to the ones where you have to pry downward.
Mike
Mike
