Lionel 5 , 42 , 6 will have no problem pulling a pair of day coaches ... here is a 6 pulling a pair of 1910 Pullmans .... https://www.youtube.com/watch?v=q2r-56omlys
Day Coaches are out there ...seek and you shall find .....Ebay , auctions , York no shortage of post 1913 Day Coaches in the World ....... now 1912 and before ...they are a bit thin on the ground here are a pair of trolley bodied day coaches ..1907-9 ... these are hard to find in any condition
single Day coach ..1912 ...note Maroon strip ..pin hole steps cut out bolsters ... rather difficult top find ..
1911 same car with red primer under green ...bit more difficult to find
cheers Carey