They made the 65-67 Plymouth Commando and Dodge Charger 273's with 10.5:1 pistons, a little bigger solid cam, dual point distributor, 4 barrel intake and AFB, 2 1/2 inch single exhaust, Chrome unsilenced air cleaner and aluminum finned black crinkle valve covers. 2 barrel 273's were never a smog engine so the pistons are at the top of the bore and had forged cranks, closed chamber heads, and adjustable rocker arms for the solid cams until 1968.
