Silver Streak's conversion (a K-Line ESE car) was considered complete until I realized I could add road-specific detail to make it even more accurate. The search for a signature CB&Q tail marker ended when I realized these parts could be ordered from MTH Parts as part of their Premier Pioneer Zephyr models. A little Dremel work, white putty, and LED's from Evans Designs resulted in this:
Photos made in the dark reveal how it leaks a bit of light from the places where parts meet. Stand way back in a well-lit room and it will look impressive. Hehe!
On the workbench I still have another Lionel obs to redo as Silver Hours which brought up the markers for the Sam Houston Zephyr.