plugs in the 4.6 and 5.0 are a nightmare . early heads would spit the plug out if not overtightened to 20ftlbs . the 5.0 plugs would break because some thread extended through and got carboned up.
i have a 4.6 due plugs and coils but i will use my little cordless impact to tap a little then put the rb to it and let set for a while.
i'm not a fan of any of the new stuff . disposable cars not to be repaired . and i will walk or ride a horse before i drive an electrical pos .