375, must be the Stagecoach.
What I would do is just load the whole thing on there, then in case you're feeling frisky you can do more...
Seriously it's just as easy to get the whole thing as it is to get parts. This should help:
http://topofusion.com/tutorials/uploading-tracks.phpIf you cut out one piece you'll just need to delete everything else (right click on the track in the map and choose "delete segment"), then save out to a new file, and follow the same tutorial as above.
Hope that helps. Have fun out there.