this can only tell you what head it has. On the head, right infront, just over the extractors.... if i remember correctly on its right (facing the car)
block u pandai pandailah....
i hope you know what ur doing, i didnt mention this earlier but i believe one of the links posted by you was that of a newer generation engine, which means its not practical to put into the older protons. thats why its cheaper, cause not much demand.
**take note the newer gen 4g cannot rojak with the older gen parts, its 'terbalik'