The turntable bridge is 22" so that gives a perspective on the engine length. I did not move the engine so the extra space on the bridge in picture two is from the shorter tender length, 1.5". I was not aware that the Pacific/Mikado tenders were longer than scale.
The PRR engine is green. Compare it to the pure black of the UP Challenger behind it in the pictures.
Thanks Jackie, a turntable and roundhouse were must haves on my layout. They take up a lot of space, including the three approach tracks it is about 8'x 3'.