Rarely seen even then. http://www.ebay.com/itm/1978-Pontia...oor-5-0L-/191564496061?_trksid=p2054897.l4275
One of these tried to kill me. The damned second latch is so big, and I'm so tall, collision was a foregone conclusion. Caught me right at the base of the skull.
I saw that one the other day, but decided not to post it even though it has low miles and a nice interior. The lower surface rust starting on the rear 1/4's and doors, along with the "reserve not met" at $1500 scared me off of posting it. You are correct most of the 77-80 Phoenix's I have seen in the last 20 years have been the 2-door body style. Those 4-door X-bodies were mostly just driven into the ground and scrapped.
Sharp looking car. Not common. The good news is that because so much is similar to the Camaro, parts are not hard to come by.