Ford Repair: changing spark plugs, changing spark plugs, swivel head

Question
I have a 2002 ranger 4x4 4.0 engine, automatic ,with 55000 miles on it,I want to change the plugs and replace them with bosch plugs.I can get at all the plugs on the drivers side no problem and should be able to get at the front 2 plugs on the passengers side,my problem is how do you get at the rear plug on the passengers side?  

Answer
Hello and thanks for the question...I'll try to help.
 The rear right plug is the most difficult to get to, because of the AC case being in the way. What I've always found that works is using a 1" extension, correct spark plug socket and a swivel head ratchet to get the plug out.
Hope this helps,
Erik