how to get open headers?
As far as pricing you are looking at:
Manual 2.5"/3" cutouts (25-30$ each) +install price (get a quote).
Electric 2.5"/3" cutouts (140$-170$ each)
To get an ORY you need to find out what LT's you have and then just buy the ORY from one of the sponsors.
Also, if you are trying to have the benefits of having open headers without going without the rest of your exhaust system then you can go with True Duals or if you are set on going out the back then a X or ORY. Also, a catback will slow the air as well.


