Perrin cbe gaskets.
 

I bought a perrin 2.5 resonated catback exhaust. It didn't come with gaskets. Can I use any stock ones or can I go to the subaru dealership and see if the Lu have a gasket there. Thanks.

What gasket are you looking for?

The v band connections don't need gaskets at all to seal properly, and the connection to the front pipe should use the stock donut gasket unless you're running an aftermarket front pipe.

The one that goes from the mid pipe to the cat.

Ahh i see. Thanks for your input. I was just confused because I saw a DIY and they replaced the stock donut gasket with a flat one.

You only use the flat gasket with certain front pipes. If you have the Perrin front pipe and cat back then you definitely need the flat gasket.

It sounds like you need just the two bolt 2.5" flat gasket. We have those on our website in the exhaust section.