I used one set of champion plugs in my life and they went into a 400 cubic inch small block chevy that i re-built when i was in high school.,
the engine ran on about 5 cylinders with those champion plugs. I was young and champions were reccomended to me by the guy at the parts store.
After about 5 minutes of running on the champions and getting a total ear thrashing from my dad, i installed a set of a/c plugs. My dad has been a mechanic for 50 plus years and when he told me that champion plugs were junk, i have NEVER bought another champion plug in my life.
Any time i get something that has a champion plug in it, it promptly gets removed and tossed in the garbage can.
Chrysler doesn't equal garbage unless you put the wrong plugs in one.