When the Conrail loco fleet was split up, the idea of each railroad "picking" the models they favored was considered but rejected. It was decided that it would be too complicated and unworkable, so they decided to split the locomotives on roughly the same 58/42% split as the company was divided. I believe the groups were arranged by value before the the actual picking was done so that the cash value of the units would roughly equal the percentages. I think the picking went something like 2 for me, 2 for you, 2 for me, 1 for you etc. to get to 58/42. Through this method, NS ended up with 16 of the 30 80MAC's. After the merger, there was some horse trading between NS and CSX, and I'm kind of surprised they didn't try to get CSX to take these "oddballs" of their hands. I suppose maybe NS kept them a test bed to gain experience with AC power, or it could be that neither CSX or Conrail rostered the prefered model NS wanted, the DC -9, so they would have had to take something less desirable to them. I would have taken more of Conrail's SD60/M/I's. chances are, those will still be making revenue miles when the Dash9's are razor blades.