From my limited research so far, there are quite a few options and routes for the Cartic-4s. From block workings so single sets in Speedlink trains, possibly even with Polybulks. Their length in service also makes them a great choice. I am looking at the mid to late 80s so I will be going for the ones with the protection panels added. Only question now is which ones, how many and what cars to use, They are going to look good behind a 47.