Pontiac GTO 2004-2006 - spark plugs

hi i have a 2005 GTO and am wondering about the ngk spark plugs has anyone tried these yet on a 05 and if so how do you like them and where can i get some thnx




:drive:

I have used NGK TR55 plugs in my Formulas for several years they make 5- 10 more HP with them over the AC/Delco. I gap them at 47-48 instead of 55 and you do need to replace them every year.

Would just doing plugs be ok or should the wires be upgraded too? Performance wise do wires do anything?