Hi NIR didn't have any of these coaches so go for green as I do believe from what im told the RPSI has one. Toilet window and door wrong way round and one big window to many to be NIR version.
Hi Anthony I think the coach on the rear that you think might be a mk3 looks like a mk2 in the new intercity livery of 1988 hence the upper dark colour of the coach, (might be wrong?)
glad you like nelson I see you bought the worsley works 70 class sides remember the power car is almost 64 feet long and centre coach and driving trailers are 57 feet long the comet coaches do perfect underframes for them and ends too also roof sections...