Currently on display at the Kansas City Museum this fully restored Ahrens Fox MS4 pumper from 1927. It was one of ten pumpers, 4 aerials and 6 hose wagons purchased by Kansas City in 1927. It, along with other fascinating historical fire department memorabilia will be on display through March 25th... there is no admission charge.
http://kcmo.gov/kansascitymuseum/
998 CU in Ahrens Fox 6 cylinder T head engine. 100 horsepower. Could pump 750 gallons per minute.