When i use the brakes over 50 mph the front shakes. between 40 and 50 mph theres a little shaking, below 40mph its brakes smooths

Hi, you could check your engine mounts.

you mean to say the engine is missing?

Struts

Check the condition of your tires and suspension. this problem is usually caused by bad component or alignment. Special attention is given to camber and caster.

Could be a wheel, tire, or axle shaft.
You could rotate the tires front to back and see if the vibration moves.
If it does the problem is one of the tires or wheels.
If it stays in the front, its probably one of the axle shafts. It could also be a hub bearing or something loose in the suspension. But a loose suspension part would normally show up when you hit a bump rather than on a smooth road.

Could be a tire out of balance, a drive axle, or something in the engine.
Is the check engine light on ?
Would it shake if you were coasting down a hill at 40 or 50 mph ?

I have this same car with exactly the same problem. Begins shaking at 40mph and stops shaking as soon as you let off the gas, but then begins again as soon as you press on the gas and smooths out as you get over 50. And the shaking is not felt through the steering wheel. Solution: Replace the transmission mounts. There are two of them, one on each side mounted on the frame right next to the shock strut. There is also a front and rear engine mount, but I replaced the two as described and shaking is gone.

Front shocks are week

Your Tires are Out of Balance. Get them Rotated and Balanced, Should fix Ya right up!

what you describe may be castor wobble and is from incorrect wheel alignment
check the steering tie rod ball joints and other suspension items