It was a K-Line dual-motored rig, and it was a motor the size of the RS-385, didn't take it apart again to see if that's the exact number. However, I can assure you that the damage did happen.
You're talking apples and oranges with that 0-8-0, because you have the TMCC components in the locomotive taking up a lot of room. If you put both in the tender, there's plenty of room in the locomotive for the Super-Chuffer and fan driven smoke.
I've put the Super-Chuffer and fan driven smoke in a semi-scale K-Line Mikado, it was a tight fit, but it is in there. That one has the R2LC and CC-M in the locomotive.