...could cause this.? I have changed tires. brakes and ball joints but it continues to shake. I have been on the forums looking and others have the same problem but no answers. Any ideas that I have not mentioned.

I think you may need new shocks.
To test,
Push the vehicle on the fender down.
The vehicle should go down,come up and stay there.
If it bounces back down again than you need shocks.
Also make sure that the wheel bearings are properly adjusted.

Did you have front brake rotors machined? They are warped they need to be machined for trueness

Do to lateral (in and out) run-out the brake rotors are causing your issue. Toyota dealerships charge an exorbitant amount to re-machine them back to a parallel position. See if there is anywhere else in town to have them trued back up. If you are the person that's going to remove the rotors pull the brake caliper bracket off and use a one pound persuader maul to tap them loose from the back side.

Next time around clean up the inside of the rotors that faces the hub with a flat brush mounted on a mandrel powered with a battery or electric drill motor. Any hardware-store has thes inexpensive brushes. Clean up the face of the hub where the studs are also. Paint on a thin amount of never seize on the inside face of the rotors that meet the wheel studs. They'll never stick from rusting again.

When you replaced the brakes , did you get the rotors cut. They are probably out of round. Have them checked. Good luck