Its more then kickin . .. it's all fresh. Im running the Danville 72mm.
Im loving my set up but doubt you need to go this big towing. I would stay on the 68mm or less side towing heavy and get a bigger y bridge on there. Big difference vs the stock diameter. You'll need a S&B mouthpiece to accommodate a 3" y bridge. You'll have to piece it together off the short y bridge and clock your cold pipe to make it work. Worth doing as far as egts go.
Thanks buddy! I was thinking twins till I started looking for room, I'd have to mount it over the cab if I did go that route :roflmao:. 68 it is!