VizKidz - I have fixed the pilot on the lead A unit and this is the only picture I have.
There are some issues in doing so. I use Kadee's so for me here are the issues. The E6's are long engines with overhang that needs a wide radius to enable the body mounted Kadee's to work.
The good part is the pilot on the lead unit doesn't have a coupler so there is no issue to giving it a fixed pilot. You just have to trim the pilot with a Dremel drill some holes and tap them to secure it to the frame. I started the project before I had any track down and never went back to it, but will some day. My project was somewhat more involved because I wanted to install an interior and some additional interior lighting. Also, because Santa Fe usually ran these as A or A-B combos, I am breaking the A-A from Lionel to be a A-B and either an A or A-B using MTH E6 B units.
I may fill the crack which is exaggerated a bit by the photo. That line is not that noticeable when looking at it with the naked eye.