I respectfully agree and disagree.

The initial question provided all the necessary information to answer the question, assuming you were familar with 70 Chargers.

The 383 4bbl engines in 70 Chargers were the high performance versions, not the regular 383 4bbl ones that may have been found in other models. These engines were orange, not blue. The 383 2bbl engines in 70 Chargers were blue.

So....the answer is ORANGE. Nothing to do with carbs, ECS, alignment of the moon or anything else On other cars the info suggested may or not hold true but on a 70 Charger that is the correct answer.