HO scale model of the cab and nose of EMD 8, 9 and 10 GP59 demonstrator units as modified for service on Norfolk Southern (class lights are blanked). Use with Cannon & Company cab and nose kits to detail the model with door locks, sliding windows, headlight, handbrake, sand filler hatch and sand valve access doors (let's face it: you just can't improve upon those parts, so there's no point wasting money printing them).
Unless you're starting out with one of the Fox Valley models with the early dynamic brake hatch, you'll need to replace the dynamic hatch with this one:
http://shpws.me/ONAG
Clean the parts to remove support wax from the printing process. Carefully trim each part from the "sprue" and assemble using CA glue.