Lol! “Agree to disagree” and then try and big league me. Ok pal.
The “race car stuff” on my Mopars has done well over 100,000+ miles of street driving. My Challenger and my Duster have both done daily driver duty, my Challenger for over 8 years straight as my only car and my Duster since then. I drive my Duster a minimum of 120 miles a week as long as there aren’t chain restrictions up for snow. Heck up until 2 years ago my Duster was the newest car I owned.
I’ve worked on classics for over 30 years, and have used them as my daily’s pretty much the entire time I’ve had a license, over 28 years now. Heck I daily drove a ‘56 Austin Healey for years.
If after all of your time and experience you can’t understand why a single shear idler mount is inferior when compared to a double shear mount, clearly there’s no point in trying to explain it. Chrysler engineers decided it was a poor design over 50 years ago. If you want to run obsolete stuff that’s fine, that’s part of driving classics. But pretending it’s just as good as later, improved designs just shows your lack of knowledge, in spite of all your experience.