Need some help here on getting my data straight. If you can let me know if the following is true or not I would appreciate it.

1. Before 1968 on Plymouth and Dodge B-bodies the hood scoops were just for looks and there wasn't any fresh air induction. This is just normal production cars not light weights, max wedge etc.
2. In 1968 and 1969 the air grabber for Plymouth and the ramcharger for Dodge were both black.
3. In 1969 1/2 the fresh air fiberglass hood came only on A12 cars.
4. In 1970 The Plymouth air grabber became vacume operated changed air boxes and was black and the Dodge ramcharger became orange and remained cable operated.
5. In 1968 the breather for the 4 bbl was large simular to the 1969 1/2 six pack breather.
6. In 1969 the four barrel breather had a large base but a small round filter and lid.
7. In 1970 the four barrel breather remained the same and the six pack breather was used with an addition of a front air dam?

What breathers and when was the air dam added?

Did the Hemi breather always have the air dam from 1968 - 1970?

Did the 66-67 Hemis use the chrome round breather?

Thanks

Please document your answers whenever possible.