The Pork Wagon (‘14 Cop Charger)
sounds like you already have it covered thenHonestly I'm not worried about exhaust scavenging. She has full length 1 7/8" primarys into a 3" collector for the long tubes. The mid pipes are also both 3". Then I welded reducers from the 3" to 2.5" for my x pipe and the rest of my exhaust.
It was an arm and a leg, but I doubt my exhaust is my limiting factor.