Sorry it took so long to reply. Air horns are cool. And the slant six was a great engine. Good old Charger 225 c.i. I worked on many of them when I was a Chrysler Mechanic. Even worked on an industrial slant six in a motor home before.
We now have 12,000 + on the Colorado. No issues. We did just receive a recall notice for something about the emissions/def system. Maybe needing to be re-calibrated.
Let you know what they do if anything.