its kinda stupid and simple... but have you checked to make sure that your air filter box is connected and sealed tightly? i have seen that before where part of the box isn't in the notches or the notches are broken. also some after-market filters make lots of noise. other that that the most...
There are 2 different things you have to consider with the shaking. First does it just do it when you are moving? or does it happen at idle or stop lights and stuff? If it is at idle then you probably have a miss fire, but if you are moving it could be a u-joint. if its 4x4 then it may be a...