hey guys i wanna get dual mags on my v6, now when i go to the shop are they gonna have all these parts avaiable to do the job or do i have to buy the dual mags somewhere, come in w/ the pieces and just have them do the labor?

 

Just go to the shop, request an appointment for your exhaust installation and make the appointment. I highly doubt they will do it on the spot if they are reputable as they will not be able to fit you in as a walk in. You could also just call the shop and make the appointment. Putting an exhaust on takes nothing but home tools and is probably the easiest modification to add other than the CAI just because the CAI you don't have to lift the car.