I am very interested in the Guinness liners too. I know that the up and down liners between Heuston and Waterford used to cross in Kilkenny during the night. The up liner used to arrive first and pick up some wagons from the freight siding in Kilkenny and shunt the bogied stock to the front of the train. The down liner would then arrive, allowing the north bound train to depart. It would then drop off wagons to be loaded with kegs of Budweiser from the Smithicks brewery, shunt the bogied wagons to the front of the train and continue to Waterford. Lots of excitement compared to what Kilkenny is like nowadays. Towards the end of the flow, the train would only run as far as Kilkenny with locos travelling light engine between Dublin and Kilkenny to pick up the train at Kilkenny or return to Dublin after dropping off the train at Kilkenny. Some brilliant pics above but I'm afraid I have none to contribute.