You are looking at making some tools to reach the bolts for the mounts. I replaced mine with the lower suspension arms off, and it was a PITA. The lower bolts are almost impossible to reach with the lower arms installed. Upper bolt can be reached through a hole in the front of the cross member. I got a set of urethane inserts and reused the clamshells. You have to make sure you get the inserts in right side up. I would never try doing it myself with the lower suspension arms in place. The cost of having a mechanic do it is cheap.