I find Norfolk Southern #2694 listed by MTH as a GP35 20-20132-3 (unpowered version) that appeared in the 2011 Volume 1 catalog. If your engine is not a GP35, perhaps Norfolk Southern also had that road number on another type of locomotive that was modeled by MTH.
CSX #801 is listed by MTH as SD80MAC 20-2301-1 with PS2 that appeared in the 2001 Volume 2 catalog.
MELGAR