I just purchased (well, ordered) a 2014 GT with the Track Pack. I asked the same question. Some places list the oil cooler, others do not, what gives? The dealer's reply was the oil cooler is integral to the BOSS 302 radiator. I took the man at his word, but I was getting the car either way, so. At any rate, I'll check for those oil lines when I get the car, of course. Don't know if this is part of the confusion, but Ford's website has other errors, and most dealers don't know diddly-squat about the Mustang. Neither really clears up the confusion.
"Any time is a good time for track time."