GP9 By Brian Schmidt | September 14, 2021 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates GP9 Alco was first on the market with the road-switcher concept, but it was EMD that capitalized with its “Geeps,” such as this Northern Pacific GP9. EMD sold more than 6,800 of its 1,500-hp GP7s and 1,750-hp GP9s. EMD photo