No, it may not. The Rolleicord in the video is a Vb. In order to remove the finder from a V it is necessary to extract four small screws from around the perimeter of the finder base. It's not made to accept a pentaprism, optionally. Unlike the Vb.
[EDIT] "A flip down sports finder is included, with a clever twist - a small glass window is mounted on the back of the finder, about a half inch below the standard sports finder window. This shows an upside-down , non-reversed, magnified image of the focusing screen, via a mirror mounted on the underside of the flip down panel. This allows you to frame an image, slide your eye down to focus, and then return your eye to the sports finder to shoot." [/EDIT]
Now, will that port to a Vb; I believe so and it sounds like a handy feature I might enjoy! I'd be willing to do the experiment and let you know for sure.