what is the best racing spark plugs for corvette c6?

[cholo]

I have a 2007 C6 corvette, and I would like to get exchange the spark plugs with a racing platinum spark plugs
What is the best to use and the appropriate size for corvette c6 2007

(AC DELCO , Autolite , champion , Denso ,NGH , Spiltfire )
can any one tell me the c6 corvette champion spark plug part#