You know, the drivetrain components look just a tad nicer then what you would expect on a machine like this (stamped dropouts, 20-30 tubing, etc...).

Could there be a possibility that the Haro-enthuthiast who had this machine before ripped some Deore components off a vintage MTB, popped on a triple (highly unusual on a bike of this caliber, don't you think), and mounted them here? It would explain the shifters as well, for they could very well have been stem levers at one time, simply retrofitted on a downtube clamp by an adventurous bike mechanic.

-Kurt