go to www.pumapeople.com and have a read of the buyers guide there.
i bought mine from a ford dealer and havent had any real probs with it and anything that needed done i made sure i claimed from the warranty before it ran out.
watch for rusting rear arches as they take a pounding from stone chips......mine goes in for a rear re-paint in august and am having the stone gaurds fitted by the paint shop so hopefully no more chips