lots of patience, lots of fittings. or yes, you can take the intake manifold off. No matter how you do it, it's a frustrating job to tackle
. Remember to use Ngk or Denso plugs, and you might want to just put the iridium plugs in so you never have to worry about it again. Don't waste money with the dual electrode pugs, Toyota doesn't recommend those anymore. Stick with the single electrode (and save $7 a plug).