273 intake manifold

Nobody liked the poor performing original iron 4 barrel intake that came on the Commando/Charger motors. I suggest you look for an aftermarket dual plane one.

I think this is what you need, but I am not sure and the price looks a little steep.

http://www.ebay.com/itm/chrysler-vi...-D4B-273-1964-65LAeng-318-ports-/121456481633