CN retrofitted the diesel engines in two 3,000-horsepower Electro-Motive Diesel SD40-2 locomotives to run on LNG using conversion kits supplied by Energy Conversions Inc. (ECI) of Tacoma, Wash. ECI ...

As does the big-footed Alco PA, the SD40-2 looks like a kid wearing gym shoes three sizes too large. - Mike Iczkowski, published in the June 1975 issue of Trains Magazine.