That's the number that comes up in Mitsu ASA as the correct part number for the 3 ignition coils. You said they are just square boxes, do they not have the cylindrical extension that seats on top of the spark plugs? Pics would be helpful.

Have you contacted Southwest Mitsu yet? Have them look it up and tell you what part number they come up with.

95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes