I would not even consider trying to straighten. The heat from the original bending probably messed with the tempering.

 

Ok update the sway bar stop on the drivers side was cracked and was causing to move like a saw causing that grove in the control arm .. took the old sway bar and match it up from boneyard and it was indeed bent a little 3 to 4 centimeters.. put new sway bar bushings new control arms rear bushing we’re cracked and new sway bar links installed!! I can tell one thing that bar was a ***** had take the steering rack out plus the rear trans mount like old blu said not of lot of fun but mechanic surely earn his money.. thanks for everybody’s help !