"Both units are the new LL N-Scale SW9/1200 I bought them undecorated as I do most of my models." "One of the reasons I chose the Rock to model was the wide range of 'ODD BALL' units. I love modeling the units that were "Different", like 900. It kinda makes them stand out in a crowd of standard paint jobs." "I didn't go to far in the detailing - they both have spark arrestors and one has a 5-chime and one a 3-chime horn - other than that, just paint and lettering."
Here are Rob's images: