Era: 1970+
• Green scheme with orange lettering, from 1970 on
• Engine 728 has full striping on the front, differing from the others which have initials and a single partial inverted-V stripe
• Engines 728 and 729 feature the distinctive large WP-style headlights
• Engines 731 and 732 have the later Pyle twin sealed-beam headlights that replaced the original large headlights
• Separately applied wire grab irons
• Etched radiator fan grills
• Window glazing
• Operating headlights utilizing microbulbs
• Celcon handrails
• Etched radiator intake grills
• Correct “nub” style walkway tread detail
• Separately applied air tanks
• Non-sound units are DCC ready using Quick Plug™ technology
• Sound units have SoundTraxx Tsunami™ factory installed
• McHenry® scale knuckle spring couplers
• Prototype specific details per phase and prototype, such as:
• Grilles • Fuel tanks • Fans
• Dynamic brakes • Battery access doors • Electrical cabinets
• Sunshades • Cut Levers • MU stands
• Air filter box • Air horn • Headlights
• Bell • Truck sideframes • Pilot details
• Many headlight options • Antennas