Look at the wires for both, are they the same color?
IF they are, then with care and a skinny little screw driver you can remove the US plug from the US distributor and install the non-US wires. Be careful that like color goes to like color position.
If they are not the same color then you need a voltmeter. Hook it to the wires and set the range for 0 -> 1-2 volts, then spin the distributor in the correct direction. Which ever wire the voltmeter's + lead has to be hooked to in order to get a plus voltage signal is the + wire. Repeat for the other dizzy, and put the non-US + plus wire in the US plug's + wire position.
Some of the aftermarket electronic ignition boxes (MSD etc.) will work with reversed trigger polarity, but it usually messes with the ignition timing in funky ways. I've no idea if the Toyota ignitor will work with reversed polarity & given their price I don't think that I'd try it.