KCS Bi-centennial SD40 616

My current project is to recreate one of two KCS's bi-centennial units, 616. Designed by an elementary school student, hers was the design that won a contest. Not quite every crayon in the box was used, but most of them.

I'm not sure if anyone else has tried to model these two units in the last 40 years, but I would like to hear from anyone that has. The only other HO scale version of which I am aware was done by Bill Tubre who worked for KCS back in the 70's and used the original paint from the paint shop for his. His was a modified Athearn SD45 since no company was producing 40's at the time.