This is a reproduction of the original 426 hemi shaker base air cleaner. The base is made out of metal just like the originals. Don’t buy the aftermarket fiberglass ones to save a buck, they don’t work! This is the stock size for the AFB carbs, if you want a base for bigger Edelbrocks we carry those as well.
This is correct for any Plymouth Cuda or Challenger with a shaker hood and a 426 hemi. This is the air cleaner base that attaches to the carbs.