performance throttle body for 05 SS

hey looking to put on a bigger throttle body for my 05 ss. anyone with tips on manufactures or has experience let me know some recommendations. not sure about size yet will check on stock size. plan on going dual with at least another 3 mm

Welcome to the forum Kevin!!!
 
This might help do the job... I want to find out how to port this out myself.  Basically it is a stock 69mm throttle body that is ported out to 72 mm and has a new throttle body plate.
 
http://www.zzperformance.com/grand_prix/products1.php?id=252&catid=113