It is indeed the 2947; there was no bushing included in the box. I don't know what bushing normally comes with the unit but, from what I've been able to find, the most common bushing seems to be a 5/8' to 3/4' which would not work for me since the male end on the water pump is 1/2'.

If it helps at all, the water pump is a MP pump that has been sold for years; it has the same size male pilot as the original pullie so; I would consider it a standard size for the car (69 Road Runner).

I may have to pick up the phone and start calling people. I bought the clutch from Rock Auto.