Help I've Been Attacked By The 4.6 Spark Plug Curse!!!

[Amber Lamps]

Yep, the dreaded Ford alum head curse has struck! The threads are GONE and I'm looking for options. Obviously, I'm considering getting a re-thread kit and having at it. Anyone use one of these kits on a Ford or other vehicle with DEEO plug "ports"? The problem with some of these kits is that they must assume that your plugs are flush with the outside of the head or something. A kit at Advance had a 19mm bolt head on it, you have to use a thin wall socket to get the 5/8 on there buddy, a 19mm will barely get down the tube itself. Also, I'm leaning towards these kits whose inserts have "lips/ridges" on then as opposed to Heli-coil type kits that do not.

Thanks for any help.