Built between 1950 and 1959 by the St. Louis Car Company, the 6000 series was the largest group of rapid transit cars ever built for the Chicago Transist Authority. Because of their large numbers, they became the quintessential "L" cars from the 1950s into the 1970s. The last of the series were officially retired on December 4, 1992.
This model is designed to use a Tomytec TM-20 chassis and Microtrains #905 Z scale body-mount couplers.
This version represents a pair of cars with the original headlight and door configuration but with roof boards added for trolley pole collection. The 6000 series cars never carried trolley poles while in CTA service, but many cars that have been preserved at museums have had them added to allow them to operate under wire. I would recommend using PCC style trolley poles from Miniatures by Eric.
Other versions of the 6000 series that are available are: