Carven R on a 2018 Silverado 5.3L

This is a 2018 Silverado with the 5.3L. It has a 3” in / 3” out Carven R muffler into a Y pipe that necks down to duel 2.5” than runs to the rear corners and empties out into a pair of 18” long 5” diameter tips. The truck only revs to about 3000-4000 RPMs in Park.