Gentlemen, a word to the wise concerning flex disc replacement. Don't wait until they start to come apart to replace them! If the driveshaft can be twisted a bit by hand easily (difficult to describe) or shows any sign of cracking, replace it. I've only seen three flex discs break in the past, but the results are catastrophic. When the driveshaft hits the underside of the floor the airbags deploy! Not something you want to happen when you're just driving along. The last car I saw do this was a late 80's 560 SEC. The under body damage was incredible! The shift rod was twisted up like a piece of taffy, the transmission housing was damaged, and the floor/body needed serious bodywork. For this reason, the flex discs are considered important SAFETY items.