In 1925 the American Locomotive Company erected five three-cylinder 2-8-2s for the Wabash numbered 2600-2604, weighing 342,000 pounds. Their outer cylinders measured 23x32 inches, the inner third cylinder dimensions being 23x28 inches. (In the photo we can see part of the Gresley valve gear controlling the third cylinder extending ahead of the valve chest.) With 64-inch drivers, these engines developed a boiler pressure of 220 p.s.i. and exerted 67,869 pounds of tractive force. Their grate area was slightly more than 70 square feet, their evaporative heating surface 4224 square feet, and their superheater surface 1079 square feet. The K-5s performed poorly and were placed into storage at the Wabash's Decatur shops, where we see No. 2600 in an undated photo purchased from an eBay seller; the photographer is unknown. In 1943 the Wabash used the boiler of No. 2600, presumably, to build the first of its class P-1 Hudsons, No. 700, with the other four K-5s following suit over the next year.