BeeJJ you can take measurements yourself, be advised these are the hillbilly method that will allow you to possible isolate the issue, once you find the problem and fix it, you will still likely need to go to the alignment shop.

To check to see if the caster is the same get a tape measure and see if the length of the radius rod from the point where is attaches to the chassis (just below the radiator)...........if something is bent you'll know as the difference will be noticeable.

As for the bushings, you could simply use a big screw driver and see if you have a ton of movement in the control arm on one side versus the other. While you are doing that make sure nothing is loose, you'd be surprised what you find.

Once upon a time I worked at a Toyota dealer and we used a hydraulic ram to bend the struts back in place but this usually had no effect on how the car drove.......it was more of a case of the tires wearing unevenly as any struts bent far enough that camber made the thing wander around needed to be replaced.................so unless you've been rallying the snot out of the car I'd inspect everything else.

Tom