HO Mantua Tyco EMD GP18 Norfolk & Western NW #2707 CUSTOM Kitbashed TESTED KDs August 15, 2026 By 0 HO Mantua Tyco Norfolk & Western NW #2707 GP18 CUSTOM Kitbashed TESTED KDs. The locomotive is kitbashed from a GP20 to represent a GP18. Engine was custom Painted/Decaled. The engine is tested but runs a little rough.