Toyota Repair: 1999 Toyota Sienna spark plugs, swivel joints, toyota sienna

Question
I've discovered that the rear spark plugs are a pain to access and change. What would be the best way to access them. Is removing the intake manifold required? I wouldn't think so. If you have diagrams from a repair manual could you send them to the listed email? Thank you, Donald

Answer
It can be done without removing the intake chamber using a few swivel joints and some extensions to make just the right combination so that a ratchet can be attached and the plugs removed, I usually remove the #1 from the front of the engine and #3+5 from the rear, it probably would take the same amount of time to just remove the itake chamber which is what the repair manual instructs.