In 1966 my 1960 Series I was the worse for wear.Traveling to various Army bases,potholed NYC streets,a cross country jaunt in 1964[which I’ve been swearing to do again] by 1966 had taken a toll.So I traded for a dark green Series 5 which had the Chrysler Pentstar and better yet a 5 year 50,000 mile Chrysler warrenty as well as various upgrades although the moonstone wire wheels[try finding a wire wheel in Seattle]Series 1 was my favorite.Chrysler had taken over Rootes so I believe the Series 5 was the first pentstar.I still have the Series 5 drove it to United 25 which was a great event. frank mooney