I don’t have any good photos or other data, just my memory and actual experience. With that said, I would presume that these units came from the Rock without the plows. MP was a big believer in this accessory and would have added a plow to one or both ends somewhere down the road. GP38-2 units were preferred power on locals which quite often were assigned only one unit. Since these units would run, quite often, with the long hood leading, they were equipped with plows on both ends. The question becomes at what point the plow(s) were added and if they were applied to both ends. I would speculate that most units received plows before a full repaint, but without some dated photographic evidence, it would be extremely difficult to say which units got what and when.