When i come to a stop in may 89 the back end seems kinda tight or something, when i take my foot off the break the back end makes a little noise and seems to drop down just a bit, then when i give it gas it makes the same noise and the back end seems to drop down a little more. My 84 did the same thing. Both have mild lift kits. My u joints are always in good shape. Does anybody have a similar problem.