2021 Silverado Trailboss RST 6.2L 0-60 Draggy after Borla ATAK cat-back install

Buddy brought his truck out for me to install a Borla ATAK cat-back system. While talking he mentioned it did 0-60 in 5.7 seconds, or the same as what my brand new 2000 TA, and Z28’s were capable back when we bought them new. Not being up on these I had my doubts that a four door, four wheel drive truck from GM was capable of this so I told him we’d throw my Draggy in and take a shot after the exhaust install. I should mention my race car hauler is a 2015 2500HD, which isn’t a slouch, but nowhere near this. I’ve got to say this is pretty impressive for such a large pickup.