torqueflite identy

Can anybody tell what my torqueflite is? The numbers on the left edge
of the case are pk3898866 5348 6358. The case is aluminum,has a
slip joint out put, And a mechanical shift not a cable shift. Any info will
be appreciated. oldhenry

 

Look in here.

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A couple of pictures to help. A518/A618 (Left), A727 (Center), A500 (Right)

 

A727, FROM 76 DODGE VAN, B100-200-300 318-360
76 PLYMOUTH VAN, PB100-200-300 318-360
76 RAMCHARGER and TRAILBLAZER 4x2 318-360