B&O No. 3684 | B&O Railroad Museum,B&O No. 3684 | B&O Railroad Museum,IC 6250 (Death Star SD40-3) Trails on CN A408 - Champaign, IL,MTA Metro-North Railroad Road Tests CTrail GP40-3H 6698. CTrail GP40-3H CTDX 6698 (ex-CSX 2181, exx-SBD 2181, née-CRR 2001, GP38, 4/1967) is the newest lease addition to the @mtametronorth roster. After seeing shop,TrainTalk: B&O No. 3684 was the very first of the 380 General Motors Electro-Motive Division model GP-40 locomotives ordered by the B&O in 1966. While it was eventually received a CSX paint