Need photos of SP diesel roofs

[mtrpls]

Hello everyone,

I have looked online but to no avail...

I am trying to find pictures of the weathering patterns on top of Southern Pacific diesels for an upcoming weathering project. I need to reference photos to determine the amount of fade/burn/grime and the overall patterns of soot on the tops of these engines. Only SP, as I am trying to mimic the effects for a dark gray locomotive. (maybe even UP?)

What would actually be most helpful would be the ex-SP SD70Ms, which now belong to UP, showing them in the last couple of years.

Thanks in advance for any help!

 

[MilesWestern]

Have you tried thje "walkarounds" on espee railfan.net?

http://espee.railfan.net/picindex/index.html

EDIT: here's the SD70M walkaround!
http://espee.railfan.net/picindex/sd70m_walkaround/gr000001.html

Second EDIT:
Here's some good roof shots showing soot patterns.
http://espee.railfan.net/picindex/sd70m_walkaround/gr000000.html