In addition to reading the DIY section here
I scanned this schematic for assistance. Even though its for the intake manifold it provides an illustration of some of the parts to remove for changing the plugs. Maybe it will help the next person down the road get an overall view of the plenum, etc. I'm gathering info myself to tackle this job so any additional tips are appreciated. Mine's a '97 Montero Sport LS 4wd, btw.