Stop in for a cup of coffee
Fun fact...
I did verify here on the site in an exchange between Tom and another member. Screen shot provided if you want to make a pen and ink change.
The ID for this 904 is incorrectly listed on page 184 of Tom Hand's book as being a 727. It just made me do a double take...re-check the pan and the tail extension length.
Another example of how this site is such a cool resource.