00 Tundra Problems

[bschmitt07]

Ok I have 2 problems with my truck its a 2000 tundra ext. cab limited 4x4. First problem something is wrong with my 4 wheel drive to start its missing the front driveshaft but occasionally I get a noise that comes from the from diff to me it sounds like the noise a roller coaster makes when its pulling you up the hills that tink tink tink tink noise if I back up say 10-15 ft. and go forward again the noise is gone. My second problem its got a 3" leveling kit on it and when the suspension droops the top of the steering knuckle rubs on the spring.. is this a common problem or could this be a consequence of a cheap lift? Any help would be much appreciated.

[00' Tundra]

how big are your tires?