1999 sonata v6 spark plugs

Exactly what is the procedure for changing the 3 rear plugs. I assume the intake needs to come off. Whats involved in that project? THanks in advance!

Yup. The intake needs to come off. But the whole engine is aluminum. Most importantly the heads are aluminum so you need to use antisieize on the new spark plugs if you get the old ones out and you need to use a torque wrench if you want to take them out ever again because if don't then they will stick. Also since you are taking the intake off you might need a new gasket for that.