Does anyone know if the dealership does any exhaust modifications (adding dual exhaust)?

 

Why? Do you have a huge roll of cash you just can't stand looking at

I don't think there are any dual exhaust options from the dealler, except maybe the Lightning setup. Just go the local muffler shop and they can custom make whatever you're thinking of, or you can get a bolt on cat back replacement. If you're worried about warranty issues by changing the exhaust, you should be OK as long as you don't mess with anything before the cats or the cats themselves.

 

Do most muffler shops allow you to bring your own exhaust kit and have them install it or do they make you buy the parts from them?

 

I'm sure most muffler shops make most of their money from the labor charges. So I don't see why a good muffler shop would not install the parts you bring in. Just ask them if they guarrantee their work and for how long and you'll have a good idea if its a reputable shop or not.

 

Sure......any good shop will let you bring in whatever you want......however, they might change their warranty policy because of it.