@ter That locomotive was originally a C39-8 but here in Peru the FCCA railway company modified that locomotive by cutting the height of the cabin, nose, radiator and fuel tank, placing a new designation C39-8PA. The tunnels on this railway are not that high, which is why they had to be modified. In FCCA eight ex-Norfolk Southern c39-8 locomotives were modified to the new name, this modification was only made in Peru.