The top ball joint is held in with a offset bushing that can be pulled out and turned in the hole to change camber and or caster. Sometimes the adjustment can be done with the original bushing. Sometimes it needs a new bushing with more or less degrees of offset to get the adjustment. I would suggest removing the old ones and starting with new 0 degree bushings on both sides, then read the alignment, these first numbers will be where the angles truly are. Then replace them with whatever offset it calls for. It is much easier figuring the new bushing offset this way.
You might have adjustable bushings on your upper balljoints, jack up, take tire up, loosen pinch bolt and turn the bushing that holds the upperballjoint to adjust camber. If they are factory/non-adjustable: Get (2) camber adjuster bushings from an auto store. Jack truck, take tire off, you might need to turn the wheel before jacking up so you can unloosen the pinch bolt on the upper balljoint. Just loosen pinch bolt, and pry the old Camber bushing out (if it is OEM its probably not adjustable). tap new camber bushing in and turn to adjust the camber angle.
make sure you have th right sized bushing in, then make life easier and have it aligned by a computer
Most new sway bar bushings are split so they can be R & R easily. Remove clamp from bushing, slip or cut old bushing out, slip new bushing in and replace bushing clamp.
I just paid for mine and they cost over 300 dollars to replace 2
Caster, camber and toe are part of the front end and steering alignment.
Front camber is adjusted at the strut to knuckle bolts.
You didn't mention front or rear, the rear is much easier, the front one is one pain.
no you dont need a camber kit
burn rubber out and cut shell out of the arm bushing holefreeze new bushing in freezergrease hole welltap or press new bushing into arm bushing hole
Depends on vehicle and type of front end.
probably or there part of the same piece ....normally there's multiple bushings on a lower control arm ...i guess it just depends on the vehicle and its probably easier to replace the whole arm rather then individual bushings.