Thanks John. As soon as I get the LEDs (especially the bi-color jobs) I'll know if I can keep the existing light shields or create my own. Even if I can keep the originals they'll have to be cut down to make room for the speaker and the decoder. Right now from the looks of it, I can fit the speaker with a .188" high enclosure where the cab end light board would have been. The decoder is a bit more interesting. I'd rather not mill out the frame for the decoder like I did on the first one. I may be able to mill out just enough of the frame toward the long hood so the decoder could fit up there. Not sure yet.
Although to be honest I'd rather have the speaker at the long hood end; seems more appropriate.
But I'll take what I can get.