Broadway Limited's HO Scale Southern Pacific EMD GP35 #6643 is an exquisitely detailed, ready-to-run model equipped with Paragon4 Sound/DC/DCC with Rolling Thunder. The EMD GP35 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division between July 1963 and January 1966. Powered by a turbocharged 16-cylinder 567D3A engine generating 2,500 horsepower, the GP35 was the last EMD locomotive to use the 567-series prime mover and the first to match GE's U25B in horsepower output.

Over 1,300 GP35s were built for American, Canadian, and Mexican railroads, making it one of the most widely distributed four-axle road switchers of the 1960s. The GP35's clean, squared-off carbody with characteristic dynamic brake blister established the standard EMD hood-unit appearance that would influence locomotive design for decades. Each BLI model features road-specific detail parts including correct nose style, pilot, horn, numberboards, and dynamic brake configuration.

Key Features:
- HO Scale Southern Pacific EMD GP35 #6643 ready-to-run diesel model
- Paragon4 Sound and Control System with factory-installed integral DCC decoder
- Dual-Mode operation on both standard DC and DCC layouts
- Back EMF motor control for smooth, prototypical slow-speed operation
- Built-in GoPack capacitor for reliable operation over imperfect or dirty track
- Rolling Thunder functionality for use with bass subwoofer systems
- Pro Lighting Mode for individual, prototypical control of all lights on the model
- Authentic recorded sounds specific to this locomotive class
- Quillable horn/whistle with multiple selectable horns and alternate whistle option
- Road-specific pilot, nose, horn, and dynamic brake configuration
- See-through walkway grates with individually applied metal grab irons