What happened before it started hitting everything?! It could be the motor mount. Easy way to test this theory is with hood open, engine running,foot firmly on the brake, place tranny in drive. Watch the engine as you ease down on the throttle, thengine will move a little, but no more. Also check in reverse. If there is allot of movement good chance that a mount(s) is bad. With the tight tolerances in the engine compartment, do you hear or feel anything else? ie. Tranny hitting floor boards,exhaust hitting F/B.