very easy job, first depressurize system by pressing brake pedal about 15 times, then (hardest part of the job) climb under dash and disconnect brake pedal, there is a hairpin type clip holding the shaft to the brake pedal assembly, this part is a real pain, then take off the accumulator ball, this makes it easier to get to the two bolts on the firewall, remove bolts and disconnect the two lines, i suggest buying a line wrench, unplug wiring and remove the assembly, install new assembly and re-connect everything and bleed according to instructions on the site (just do a search)......one tip, if master cylinder arm does not want to come off of the brake pedal assembly, disconnect everything under the hood and have a buddy twist the powermaster a bit, use a screwdriver and gently pry it off of the pedal linkage......hope this helps