I just changed mine last week. My car has 170,000 miles and still had the original Decarbons. The fronts were making a hell of a noise so I knew they were gone. After looking through many different shocks I was told to stay clear of the Monroes and go with either Bilstein or Koni. Well I couldnt afford either so I found a great deal I couldnt pass up. I got all 4 KYB GR2's for $160 from a guy. These are supposedly a stock replacement or a little better than stock but I am very pleased with the ride. I would suggest them for a DD. My car rides like new again.
Now as far as installing them, the backs were cake. The fronts were a pain in the ***. I rented a spring compressor from Oreillys that worked very good. I just had to pry the springs apart a little to get the fingers in. Now the nut that holds the top part of the shock on was completely rusted on both of my shocks. So bad that it wasnt even a visible nut anymore. I had to cut both of my shocks in half with a reciprocating saw. I also found out the hard way that the easiest way to install the front shock assembly is to remove the upper A-arm, not the lower. Other than that it was fairly easy. I replaced my cotter pins also because they were so brittle.