Camber is your Left-right position of the wheel.
Caster is your In-Out(Toe-In or Toe-Out) position of your wheel.
How does it effect ALL cars including foxes. If you have wrong camber or caster settings, you will have a broken control-arm or busted wrecked up tires.
I'm going to assume you are looking at adujustable camber/caster plates for you to ask that question and here's my answer/ If you plan to lower youre car, buy them, they are easy to install and will fix the geomerty of your ride height(I know I sounded like jegs) but I've owned a pair of BBK ones and they really do fix the alignment of your car. Plus you feel that your car is not (fighting the road)
Toe is adjusted with tie rods, camber is the angle if youre facing the car / \ is negative, \ / is positive. caster is like a shopping cart front wheel, or caster, from the driver side of the car the wheels center line will look like \ from balljoint, to strut mount.