Ford Thunderbird distributor

[midnight sun]

A Friend of mine is restoring a 56 Thunderbird.  He is getting ready to disassemble the engine but has a question regarding the distributor.  It is a dual point setup.  The strange part is that there is some type of electrical unit that has a vacuum hose on one end and two wires on the other end.  Each of the wires goes to a set of points.  It doesent look stock because where the wires go through the side of the distributor housing is where it looks like the arm for a mechanical vacuum advance unit use to go.  There currently is no advance system on the distributor and it has a mechanical tach drive also.

Anyone have any ideas?

Thanks

Later