I'm in the middle of doing mine right now. What a PITA. I have a 420SEL and had to pull the coil springs. That just added $200 for the cost of the proper compressor. The old mount was rusted in so it was hard to remove from the dogbone. I'll get through it but everytime I take a second look, I find other bushings that COULD be replaced while I still have it torn down. Guess I will replace them now.