It has now been unequivocally established that this appliance is KEC760 and not GJM447 as first thought.
Of the four Karriers operated by Westmorland, this was the only one to carry this later body style,
as can also be seen in the pictures of this appliance on the Kendal Library page.
[Pictures courtesy MF&RS and reproduced with permission.]

Dodge WHH33Y was seen on the station forecourt.
[Copyright picture ~ A. Kent and reproduced with permission.]