here's a really nice NOS 340 440 Six Pack air cleaner originally for 1970 and 1971 Plymouth and dodges.  Models include Cuda Challenger R/T Charger GTX Road Runner etc.  Part# 3418717.  been on the shelf in storage for years recently found.  Excellent NOS condition, nice black paint maybe a couple small scratches.  Nice opportunity to purchase real Six Pack intake!