Also...screw the rear o2. Buy an emulator and like it.
I looked for one before going the route of a spark plug non-fouler. There is not an o2 sim that will work on a 04+ currently. The ones that are out there are for 03' and down.
2005 GTP - AL 605's gapped at .055", SD headers, WAI with 9" cone air filter, 180 degree t-stat, green coolant, otherwise stock.