ATHG27323 Union Pacific UP G2 SD90MAC-H Phase I Diesel Locomotive #8520 with DCC SoundUP FEATURES: #8503 & #8500 represent the first renumbering, originally delivered as #8203 and #8160 respectively. #8509, #8512, and #8520 are modeled with the starter capacitor removed and the EOT mounted further forward on the fuel tank. Union Pacific became the only buyer of the SD90MAC H, known to them as SD90AC, when Canadian Pacific transferred their order to the Phase 2 variant. The first 7 were considered pre production units and wore 2 3