My 1967 ford mustang its have a wheel problem , the wheel is not stable sometimes its going to the write side by its self sometimes its streat and when 2 people in the car the whell is completly its bend and streat by its self and pull to write side also so plz give me a solution

The first thing to do is to check for correct tire inflation in all four tires. Also you should check to see if the wheel pulls one way or the other when you use the brake. If you have a pull to the right it could be a brake that is not releasing or you could have a bad tie rod end, ball joint, idler arm or center drag link. It's also possible that you could have a bad tire.
If the car seems to pull worse with the brake applied I would suggest replacing the brakes and having the drums and rotors turned. (if this is equipped with front rotors.) You should replace all 4 brakes because a faulty rear brake can cause the car to pull on way or the other .
If this doesn't seem to be the issue I would recommend that you check the steering components and replace any bad parts and have a front end alignment.