Deleted it. The information in your post really confuses me. Every example mentions the Turbo 400 3 spd auto but it was only available on the big block SS or COPO, and wouldn't come with the engines listed above.
Most likely later in the production year cycle optional non-standard rear axle ratios were added and became available so they wouldn't be listed on earlier lists. Kind of like how that added the big blocks after production had been going for 3 months in '67.
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