i have the same car and all wheels PCD 4x108 will fit the studs. all ford four stud wheels fit and a mate told me that pugeot use the same fitment. all you have to do is check the offset, use a fiesta tuning site if you dont know it.
rustyfez replied to Chrissy Mk4 Fiesta Lad's topic in Ford Fiesta Clubi think 17 fit because they fit on the smaller mk3. you may have to modify the arch liners and on the mk3s i think there is a way of limiting the steering box. but i havnt ever done it myself. pretty sure you could do it without to much trouble.