This id definitely a truck worth investigating. I have no idea what the owner is asking but if like Tim says, it has the unison seats and they are complete, that is worth a chunk by itself. Get more pictures of the seats especially around and the back of the drivers seat if possible, the floor cover over the transmission and crossmember under transmission. Also the starter on passenger side of engine and the steering column under the hood with linkage. This is the truck that Tim mentioned belonging to Walter. He has since passed and the truck is now in Europe I believe. Walter liked "all the bling" and spared no expense. His is also a 55 1st series.
Here is a video of when it went to auction after he passed. lots of detail pics
