Iron Planet Hobbies Rapido HO Scale ~ M420 British Columbia Railway #644 & #683 ~ DCC Sound ~ 33525Both units are powered 3D scanned from an actual M420. This is as close to real as it gets!MR-20b and MR-20c classes available in the first runRapido’s innovative dead straight metal side handrails with plastic stanchionsIncredible underframe detail including traction motor cables and other piping, rerailer and a silly number of separately applied partsTwo or three panel radiators, louvered or large opening electrical cabinet door, open or closed truck bearingsSeparate grab irons and handrails installed at the factoryOperating headlights, rear lights, tri-colour class lights, and illuminated cab control standHighly detailed cab interior with optional open front doorDC/Silent (21-pin DCC Ready) or DC/DCC/ESU LokSound And some new features! CN 3500s feature rebuilt long hood with knuckle buster door latches, paper air filters, retention tank, ditch lights and relocated horn BC Rail has the correct fuel tank size and location, four rock lights (in nose and pilot) and rebuilt stepsB-units are part of A/B set, single A units can be purchased separately.P&W version has the correct Type B trucks and headlight variation We are an authorized KATO dealer.Thanks For Looking!