KCS #2904, what looks like a former CN safety-cab GP40-2W, has both chicken wire and grilled radiators, a combination I've never seen before on an EMD.
http://www.locophotos.com/PhotoDetails.php?PhotoID=114157
KCS 2904 is a GP40-2LW and was formerly CN 9563. I suspect the different radiator grills is simply the result of what spare parts were available back in the shop when repairs were required.
Mike
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