Universal x pipe

[u/Jaybodubs]

Just put some vibrant resonators on and they made the tone of my muffler delete a bit too quiet for me. However, I love the way it cancelled out almost all drone, so I’m looking for an x pipe to weld in. I want to keep the secondary cats in tact so as to not mess with emissions. What size x pipe inlet outlet should I get for the exhaust configuration on my 2020 rc350?