Did you end up doing this? I want to do a muffler replacement or delete but don’t want drone. I don’t need anything crazy loud like the atak although it sounds amazing ?
What’s real world gas mileage difference between the 5.3 and 6.2?
I’m heavily interested in an AT4 don’t mind the cost of premium as that’s what my bmw takes now. But wondering about gas mileage differences...