Odd question about Dusters

To name a few off the top of my head,
'73 and newer has:
Different front clip except fenders
Different rear tail light panel and tail lights, different trunk lock style
Fold down rear seat as an option
interior door panels with plastic trim on top as well as relocated door handle in a different style, armrests f+r, rear window sail panels under side glass made out of plastic
side impact beams in the doors
front seats have headrests incorporated in them ("tombstone" type)
cardboard headliners
electronic ignition on all engines
side marker lights, plastic rectangular that sit on top of sheetmetal
biggest rear diff was an 8 1/4" bbp, no more 8 3/4" sbp (boo, hiss!)
All v8 cars came standard with the bbp front discs and 1/2" wheel studs and bbp all around. (The best thing that mopar did to a bodies, they probably realized that they would only be getting heavier lol)

The '72 was a transition year and had half of these features, and half of the '70 and '71
stuff, but did not have bbp
'74 and up started the impact bumpers and a different style rear bumper

These are the basic differences, there is a lot more if you nit pick, but these are the main ones that stick out in my head.
I hope this helps.
Tom.