On December 11, 1952, with only the first six locomotives having been delivered, UP placed an order for 15 additional 4,500 horsepower gas turbine locomotives. Numbered 61 though 75, the second order eliminated the side air intakes. In their place was a covered walkway along both sides of the locomotive, giving them the nickname of “Verandas”.

Like the standard turbines, each Veranda turbine carried 7,200 gallons of fuel oil and 1,000 gallons of diesel fuel. In addition to the gas turbine, there was also a 250 horsepower diesel engine. The diesel was used to move the locomotive around yards, power the auxiliaries, and crank the turbine. Each locomotive weighed 551,720 pounds and was just over 83 feet long and stood 15 feet six inches tall. They rode on two sets of span-bolster AAR Type B trucks with a wheel arraignment of B+B-B+B. The gear ratio of 74-18 gave a maximum speed of 65 miles per hour and a starting tractive effort of 137,930 pounds. Like contemporary diesels, the gas turbines were equipped with dynamic brakes.