Celica Forums General Discussion Engine and Performance Header questions

Hey new on the page here,
I have a 00 gts 2.5 straight pipe, other then that it's stock, been looking to buy some after market headers but I'm no sure on what kind, I'm wanting some hp gain but what I'm worried about is, will the after market headers match up right like the stock headers? I don't want to cut or add anything on if the aftermarket headers don't match up right with my exhaust, please comment and help out thanks

The best headers for the gts are ppt headers their around 650$ but they put some serious power to the wheel ,
Those are the only heardders that will actually make a difference