RST 6.2L Exhaust

[JONWROB]

Does anyone know what size the exhaust is on a 2018 6.2L Tahoe? The truck I bought does not have the performance exhaust on it. Borla and Corsa only offer it in the 5.3L cat-back. I am looking to put a Borla on it muffler back to the tips, but I don't know what size to order.

Thanks