70/71 E Bodies and 1971 B Bodies take the same automatic transmission cooler, that being the rectangle cooler. 66 to 70 B Bodies take another style of automatic Transmission Cooler the square type that was posted by BS27 with a picture above. The differences between the 66-70 would be in the body styles with different brackets on the square automatic coolers. Not sure how many different brackets there are for B Bodies. I would say a set of brackets for 66/67 B Bodies, then 68,69,70 B Bodies, and a different set of brackets for a Daytona and a Superbird and then maybe different brackets for 68,69,70 Chargers.

Maybe some one knows if a 1968 Hemi A Body with an automatic got a Hemi automatic transmission cooler.