Reynard Wellman of Micron Art is planning on producing a detail kit for the AZL GP38-2 locomotives. Here's the short list with the specifics I received from Reynard yesterday: http://www.ztrains.com/blog/micron-art-plans-azl-detail/ John Ztrains.com
Maybe you can mention that Nickel Silver might be a better option. It is more robust than brass and will hold paint better than stainless.
I believe that Reynard said that they were going to be made of stainless. This was on the Yahoo forum a couple of weeks ago. DanS.