SEPTA Silverliner II (x6)
The Silverliner IIs[en.wikipedia.org] were ordered by the Pennsylvania Railroad and the Reading Railroad in 1963 to supplement a few existing Pioneer III MUs and many MP54s and Blueliners in service on Philadelphia-area commuter trains. They were quickly taken by SEPTA when both of said companies exited the commuter rail business.
These seat 125 people per car, and come in 4-car and 6-car versions. The six-car version sticks out of stations a bit. Sorry that they aren’t in one asset, but that was giving people errors…