First, it looks to be a rebuilt GP35 and by the model designation, it will have a 12 cylinder, 645E3 engine (2300HP).
Second, the 'curved molding' is likely to be the traction motor blower housing.
The GP39V's were rebuilt from GP35's by VMV for BN in 1990 and 1991. They are numbered BN/BNSF 2960-2984. http://www.trainpix.com/BN/EMDRBLD/GP39V/INDEX.HTM
"I Often Dream of Trains"-From the Album of the Same Name by Robyn Hitchcock
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