Larger manufacturers will, with locomotives as popular as the GP9, offer various levels of detail depending on what a modeler may be looking for. Manufacturers offering EMD GP9s include Walthers ...

PRR GP9 This pack allows you to jump in and drive the PRR GP9 locomotives (with Early and Late liveries) in your own sessions. Find them under the Trains Tab by searching for 'PRR' in Surveyor.