For the Standard Denso spark plug:

stock # 3046
plug # W20EPR-S11

For the Premium Denso spark plug:

stock # 3116
plug # P20PR-S11

For the Iridium Power spark plug:

stock # 5306
plug # IW20

I am at work right now and I just looked in our Denso book for the application under a 1988 G54B Mighty Max...its the same for the Montero/Raider.