Trevor,
The 463 has been used in the regular rotation during the season. She is capable of pulling the 1.42% Grade out of Antonito by herself. Of course she can be used in helper service out of Chama. The Smokebox arrangement and the stack diamentions add us to a loud 'Stack Talk' while working a grade, sharp and crisp. Quite a treat for any steam fan. I rode behind her from Antonito to Chama a few years back. A great trip!
Kevin Cook