Cars can be upgraded with optional lighting kits

for activation of functions such as horn/whistle and bell on a separate sound unit

Model Number: 6-11229

They operate on O-31 curves

Model Number: 2509

Roundhouse 77717 HO Union Pacific/Grey Ghost AC4400CW Diesel Locomotive #6344 LastUpdated_20262307033308 Cars can be upgraded withThis is a Roundhouse 77717 HO Union Pacific Grey Ghost AC4400CW Diesel Locomotive #6344. It features: Non illuminated ditch lights, Three cab variations, See through cab windows, Factory applied sunshades, frame mounted bell, exhaust stack, brake wheel, rear sand filler, air tanks, Separately applied wire grab irons, Fine scale handrails, Steerable or Hi ad trucks with separate shock struts and brake cylinders per prototype, 5,000 gallon fuel tank,