Keith, I am also wanting to built a model of Rowfant, but from the very early 1960s. Ian White sent me bit map images of the original drawings of the two station buildings, which I still have. I also have sets of the Backmann tankers that have been referred to in the postings in response to your questions. I also have a cardboard kit for the station house and of the signal box at Isfield, which is similar to Rowfant. As a teenager I used to visit Rowfant often and once had tea in the signal box. Have you seen the 1963 photos on Flickr by Ian D Nolan? Have you managed to find any information about the saw mill with the Scotch Derrick?