Alco RS-11, New Haven (NH 1403).  I started out with an undecorated RS-11 made by Atlas Model R.R. Co.  I airbrushed the body in Accu-Paint stencil black, and the cab in Socony Red.  Northeast decals were used to decorate the unit.  The diesel was sprayed with a flat finish, and weathered with pastels to bring out the body details.  The standard fuel tank was replaced with the larger capacity RSD-12 tank to match the prototype.  When the decal parts for Hancock air horns became available, these were added to the unit, and the standard horns were discarded.  A Micro-Trains pilot and coupler are mounted on the short-hood end, and a Kato coupler was truck mounted on the long-hood end.  I do this because I run these units in sets of three or four (mixed with GP-9 and H-16-44 units), and keeping the diesels coupled via a Kato/M-T or Kato/Kato connection prevents unwanted engine uncoupling.  This also puts an M-T coupler on the front and back of the consist, to allow for automated coupling and upcoupling.