 GRLW currently operates two EMD GP9 locomotives numbered 3751 and 3752.GRLW Also operates 4 EMD GP30u locomotives, 4201-4204.Unit 3751 was formerly ECBR 6513 (2003–2007), formerly PTR 6513 (1987–2003) and originally B&O 6513 (1957–1987) - EMD frame no.