WALTHERS MAINLINE 910-10480 HO SANTA FE GP-9 PHII DC/DCC READY #748 NEW August 16, 2026 By 0 WALTHERS MAINLINE 910-10480 HO SANTA FE GP-9 PHII. The Walthers Mainline Phase II High-Hood GP9 is a must-have model for your first-generation diesel roster! DCC-ready with 21-pin (mtc) DCC plug. Constant and directional warm white.