My 227 will be a bit of a challenge as the lettering is pretty good but you can see the paint damage around the cab edges. Plus it will need e unit work as well. I also have a 203 that needs marker lights and has some serious cab roof damage that I was thinking about using a piece of rolled brass much like you did on your switcher. I'll definitely give that a try now. Your switcher threads are a great source of info both in what you have done and what others have offered as far as information. Thanks for posting all of it!
And by the way, you can't ever have too many switchers!