nobody( at least not me) is in love with them. Just factually pointing out they have been in widespread use forever, and generally with very good results.
Sorry if it doesn't fit your narrative John. I sold hundreds of those 3800 equipped Lesabres, Park ave, Olds 88’s and 98’s and certain Grand Prix over the years. Most all of them with those plastic plenums. And i can tell you from experience they are among the most reliable cars i have seen in 32 years in the car business. Most anybody in the industry would agree.
