How do you change the spark plugs in rear near firewall on 2005 Kia Sportage

front 3 plugs are easy to change, but rear 3 need extra work

Asked by for the 2005 Kia Sportage
My labor guide says it a 1 3/4 hour job to replace them so it won't be that simple. Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners.