Union Pacific's GE AC rebuild program - Trains Magazine

I am talking about the SD70M not the ACE models.  The 4000 HP models that they ordered a thousand of in the mid 90's right after they swallowed up the SP.  The 4000 class of straight DC models.  They are coming close to the end of their lease periods and from what I have gathered UP is not considering buying the lease out and wants to return them to the leaser.

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