Shell swap it is.
Red interior, plus F 19 on the audio chip. These look like the "innards" of TMCC Santa Fe F3's with the lead unit being #19.
http://www.lionel.com/products...9-dmy-a-19c-6-14588/
When you get to trying it you will probably have SF dialogue confirming this.
Hope your friend got a "really " good deal.