How do i get more power out of my new 2008 Infiniti g35?

I'm looking to boost up the horsepower and/ or torque on my new g35 but I really don't want to mess with it too much cus of the warrenty. Right now it has a v6 with 306-309 hp but i want to get it around 330-340. The torque is probably around 280, 290 at most, but i want to get it up to 300. Even if one can be done without the other please tell me cus I'm kinda new to this. If u have any links please do tell.