I have a 91 4.0 on 31's with 6" lift, been lifted for years. I recently replaced the clutch, and steering damper and tightened the steering box. Everything was going fine until a day or two after when i started getting a bad shake, in what feels like front end. It started when i hit about 35mph and up and now two days later is starting to shake at 25mph. Its only when i have power going to the wheels, either accelerating or engine braking. I know the back u-joint of the front shaft fell apart when i was doing the clutch, but it was put back together well, and i dont think i have play in the front shaft after a quick test. I know this thread is a little played out but the specifics are slightly different and there are so many different opinions on this i could really use the help. Thanks in advance.