Mystery Fuel Pump

I got a basket case OMC given to me that I'm trying to identify. It's a two cylinder looper, probably a 1980s 50-60 hp. It's pre-thermostat, that helps a bit, but I need to get closer before ordering any parts. It has this strange fuel pump on it that is different from any other I can find going through parts diagragms. (See photo--sorry for the crappy resolution.) The 'normal' pumps for this motor have a trianglarly pointed end where this one is rectangular.


Thanks,

Jeff

PS: Also, looking for a junk driveshaft for it. It's 5/8 " OD with at least 14 fine splines.

No OMC 2 cyl loopers were built without a thermostat. The 71 thru 88 have a stat and poppet in the bottom of the head. Later "Lost foam" heads the stat is up top, under that plastic plug.

Looks like some sort of import, or maybe an Eska??