thats it,but check around for better price.try summit,jegs,or some of the other parts places.if you have 08,check if you have new heads.people are saying the 07-08 has different heads that have different plugs.
That's the correct plug if your GT was built prior to around Oct. 2007. If yours was built later than that you most likely have the new head design which uses a different plug and doesn't have the same issues when removing the plug. To be sure what you have just remove one plug and see type it is. If it's the new design then you are 'golden'