I know there's several UP experts who may be able to help me out with this one... In keeping with my more modern theme, I want to take an Southern Pacific GP60 and correctly cover the SP logo/numbers with the new UP colors. I've found some pictures online that I'm using for my prototype in decal placement, but I'm wondering if I'm missing something else. Any structural changes to the shell? Anything? If this is a good and typical "patch" job by UP, then this is what I hope to turn the SP unit into. For those that have already accomplished this "patch" job feat, do you first remove the old numbering so they can't be seen under the decals, or do you leave them to give a hint of the old numbering - further reinforcing the fact that the engine had a previous life on another pre-merger railroad? (Now, I'm modeling these in Nscale - so unless you have a magnifier, you can't even see the painted/covered over old numbering - but when you take a close-up picture, you see the old numbering under the decal.) Any inputs would be helpful...thanks guys.