Drone is apparent between 53 and 58 MPH... No problem... Just as Sammy Hagar says, "I can't drive 55!!!" So it's not an issue. Also, on hard acceleration, it drones a bit just before a shift, but it's momentary and not really an issue.
I haven't noticed any loss of low end torque, but I have noticed some upper end performance with it. My 40-60MPH passing acceleration seems to have improved considerably... This truck FLIES when you stomp it to pass someone.
And the sound quality.... it's virtually indescribable. It's not a bark or a howl, but a tuned growl that improves up through the power band. It's creamy smooth both up and down the power cycle with absolutely no popping or bloating on the way down.
The build quality is first-rate and it's a perfect fit on the truck. No adjustments at all were necessary to make this fit. And as Papa_D has already said, it virtually puts the stock system to shame as far as build quality and looks. I have to say, too, that I really like the 3-bolt flanges instead of the crimped pipe with U-bolts.
Worth every penny, IMO...
