sentences:  At the time, it was considered a luxurious "muscle car", with all the performance of the Dodge and Plymouth products of the time, but with the luxury features expected of the Chrysler name.The 300 was positioned as a cheaper rendition of the 300 "letter series", and a sporty variant of a full-size automobile, adding 4-door hardtop version and running alongside that model until its discontinuation in 1966.It became the sole 300 model until 1971, when production ended.