From the MTH 2017 Vol. 2 catalog, I'm looking for some combination of the Frisco E8's they offered that year:
20-20855-1 "Messenger" powered A unit
20-20856-1 "Sea Biscuit" powered A unit
20-20855-3 non-powered B unit
20-20856-4 "Citation" non-powered A unit
These engines and the matching passenger cars were released just before I got into the hobby. I'd be happy to buy them if you're ready to move them on. Thanks.