The car calls for a .060 gap stock, I'd rather go .055 because its a personal choice.

If you don't plan on modding further, I'd say if you went with the stock ac delco plugs it should be alrgiht.

The thing is, when you add more power to the car, there is a point where the factory spark plugs are too hot, its the reason why many of us will run a cooler plug.