Left side is M-Code only,good luck finding that one,BIG $$$.Right side is the same as 383 A-body,but with a 3/4" spacer added onto the bottom to space the pipe down away from the body.I think someone was talking about repoping this spacer,not sure if it available yet. Also the L/F motor mount bracket is unique to M-Code only. John.

1970 Dodge Charger R/T S.E. 1969 Dodge Dart GTS 440 M-Code 1970 Dodge Charger 500 383/4-speed w/A.C.