These models recreate the FP7 and F7B locomotives received by the Pennsylvania in their tuscan red livery with the five dulux gold stripes. InterMountain has produced all four A unit numbers and both B unit numbers of the prototypes. Each model comes fully assembled with wire handrails, etched metal grilles, cab interiors (on the FP7), and Kadee® couplers. The smooth drive is available either as DCC ready with the 8-pin NMRA compatible plug, or with the QSI sound system installed that will work on DC or DCC.