THANKS5/8 ths. You can spray the rubber holder with a little wd40 an it will still hold the plug but should slide off when you remove the socket.
Did 3 times on my 05 and didn't break a single one. But I've never been so stressed out doing a plug change. Did the TSB and just cracked them an 1/8th turn and let them soak with Seafoam deep creep. I think it took me over 2 hours just to do a plug change on that motor.Try removing plugs from a 2005 F150 5.4 liter 3 valve engine stock. On the ranger you may might break the porcelain but you won’t leave the piece in hole requiring a special removal tool. Been there done that. A 2 day job I didn’t enjoy..
New plugs are all one piece welded instead of crimped. Google it and feel lucky. Also use a plug socket with a rubber insert. I usually remove the rubber insert and cut it short so will release the socket after installing new plugs.

Yeah, the 5.4 is NOT FUN...loved my 2002 lightning, but with the blower and the way the plugs slanted, me did not likey. BUT I still miss that truck. Was fun toasting vettes.Try removing plugs from a 2005 F150 5.4 liter 3 valve engine stock.