My 1862 General set came with a baggage car, passenger car, and a staked flat car with horses. There never have been box cars in those sets, IIRC. The actual train that was hijacked (trainjacked?) at Big Shanty had stopped to allow the passengers to get lunch, so passenger cars are appropriate. The train needs a couple of boxcars to be authentic to the event. Also, the Texas needs to run well in reverse, as that is the configuration for the pursuit. (Unless I am thinking of the Yonah, which was also involved. I need to look at the history books.) 
