Have a 2006 cobalt ss 2.0 but im looking for a head preferably upgraded internals for under 1000$ let me know if ou have one!

 

it might be worth your while to look for a reputable machinist (local to you or here on the forums) and have your head ported and polished. Upgraded springs from ZZP don't cost that much, and depending on your power goals or what direction you'd like to take your car, you could think about cams. Welcome to the forums btw...

 

try mongorat.