I got my plugs. Sweet! Thanks for the 20% off tip stang72.
Reviving an old thread. I have a 2008 and on Rock Auto it shows black or brown cop boots for spark plug choices. I have the black boot and it shows HT1's will work. Does this mean i have the earlier style heads? I just want to make sure i have everything needed before attempting to change them out.
Edit: found the info i needed from some different search terms.
Black boots = old style plugs same plugs as the 05-07
Brown boots = new style plugs No HT1's available.
Just get the new Motorcraft Replacements, SP-514.
They have the nickel coating just like autlite, but you can get them for $70 - 6% discount on AM:
http://www.americanmuscle.com/ford-sparkplugs-0507gt.html
Replaced mine with these about 2 months ago and they run good!

Rockauto.com
$60 for 8 autolite ht1's without the discount or shipping yet.
http://www.rockauto.com/catalog/raframecatalog.php
Total comes to $62.77 shipped for me.