Lee,
I used two Lionel 0-8-0 conventional RTR locomotives. Pennsylvania #565's from the 6-30174 Pennsylvania Flyer set.
She's under full power in the video. Motors are wired in parallel.
These 0-8-0's aren't all that fast, so parallel gives plenty of low-speed grunt and a good speed range.
EDIT: I just looked up the Vision CC2. Looks like my little kitbash project is more historically accurate than I realized!
The only two 0-8-8-0's I'd encountered before this were some camelback thing, and the NYC NW-1. Since the CC2 is a Pennsylvania, I won't even have to repaint the tenders!