2011 aveo5 throttle body stock size?

what is the stock throttle body size on a 2011 aveo5?

im looking to get a bigger throttle body for my 2011 aveo5 lt it has the 1.6 etec and what is the stock size and also im in search for more power thats the basic idea i know i need to get an exhaust also but what other possiblities are there to increase the power every mechanic is tellin me the car is to new to buy after market parts which personally i think is bs i know the parts my be limited but theres gotta be somethin i dont really have a price range so anyone someone throw me some help lol?

First off welcome to the site.

What makes you think a larger throttle body would even do any good? Are you still seeing vacuum in the intake manifold at WOT? If you're not, going to a larger throttle body isn't going to give you anymore power.