Well I don't think this is the whole story.
You can adjust caster and camber to a small degree on our cars by loosening the four subframe bolts and shifting the subframe. It will move in any forward/back/lateral direction by several milimeters, enough to correct most small cross camber and caster problems. I took care of an age old right drift that my car always had once I lowered it and adjusted the subframe. THe alignment shops are usually too lazy to try to shift the subframe so I actually did it myself and took it in again later for fine tuning.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black