IIRC, there is a procedure to check the coils in the FSM - you would be measuring the coil resistance utilizing the wiring harness plug on top of the intake plenum so you don't have to remove the coils. I'd start with that before replacing parts that don't need to be replaced. The coils on my 95 are still original with 211k miles on them, so they aren't something that needs to be replaced unless they test bad.

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