Re: need detailed info on how to change plugs
V6 engines on any vehicle are a PITA. I suggest spending the $20 or so and picking up a Haynes or Chiltons repair manual at your local auto parts store. It'll give you fairly detailed instructions on how to replace plugs, as well as other regular maintenance items that you should be able to do yourself.
Off hand though, I know that 90% of the time, you have to remove the air box, intake pipe and the wiper cowl to access the rear plugs. Even after that, they'll still be hard to get to.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!