Lackawanna O Scale Premier FM Train Master Diesel Engine - With Proto-Sound 2.0 (Scale Wheels) 20-20128-2
Union Pacific O Scale Premier SD40T-2 Tunnel Motor Diesel Engine w/Proto-Soundr 2.0 (Hi-Rail Wheels) 20-20137-1
Union Pacific O Scale Premier SD40T-2 Tunnel Motor Diesel Engine w/Proto-Soundr 2.0 (Scale Wheels) 20-20137-2
Southern Pacific O Scale Premier SD45T-2 Tunnel Motor Diesel Engine w/Proto-Soundr 2.0 (Hi-Rail Wheels) 20-20138-1
Southern Pacific O Scale Premier SD45T-2 Tunnel Motor Diesel Engine w/Proto-Soundr 2.0 (Scale Wheels) 20-20138-2