https://www.torqen.uk/nissan/370z/exhausts/exhaust-systems/17548-370z-greddy-evolution-gt-304-25-to-3-stainless-steel-dual-catback-exhaust-10128303.html
That is the link for the exhaust but actually, I have just seen there it comes with 3, 3inch gaskets but I'm guessing it doesn't come with cat to y-pipe gaskets.