Street Mopars were no problem. Mopars got scary built. But even back then they were more expensive. And more rare.
That same crowd from the 70s are still Chevy guys. I'm the one that broke ranks. And went Mopar in the 80s. Never looked back. And it started with the "Look" Chevy body lines are a little dull. Thus why (I believe) Mopars are able to support wilder color schemes. Mopars just look sharper. Better defined body panel folds. It wasn't until later I learned engine design advantages. Primarily in the heads. Rocker shaft vs Chevy's Ball Stud. And of course Hemi is just a full step up.