Not going to comment on the plugs,but i'll forewarn you,if this is your first plug change on it,you'll need a thinwall plug socket to get the plugs out. If you haven't got one,you might have spend a few minutes grinding down a standard plug socket to get it to fit.Some guys get lucky and they have a socket that'll fit,me not so much,lol.I ended up grinding down a standard plug socket to fit on my old 2013 4.7,lol
"OLD" 2013??? Its been since 2006 when my 97 Wrangler passed that age, since I had anything that "new"!!!! (that was closest to new I have ever had to date, bought it at 3 years old, in Y2K) and I had it almost 20 years!!!
to me anything made this century is "new"!!! Up until yesterday, the newest (by model year) I have ever owned was a pair of 2001s. First an XJ Cherokee and for the last 8-1/2 years. my 01 Durango (still my wife's daily driver) I'm quickly appreciating the older vehicles more by the day. I hate when fall comes and I have to park my 78 Plymouth Fury. I also have an 85 Dodge D150 that I'm currently restoring.
The 70s/80s era Dodge trucks are more my cup of tea. If it don't have it, (whatever newfangled gizmo you might mention) it can't strand you!!!! \
If "the bank" were more lenient I'd have bought a 92 Cummins D250 instead of my '12. and '12 just made the cut for my bank loaning any money to buy it. I see all these '08s and '10s listed for more than I paid for mine, and can't believe the banks think we all have that kind of cash laying around....