Stop in for a cup of coffee

@Rainy Day Auto you'll know the answer to this, are 1970 dart swinger quarter Extensions different than 1972 quarter Extensions?
They are the same....72 had small holes on the bottom lip where an optional trim piece went but not all 72s had that trim.

The early ones didnt have the pre drilled holes....they are on the bottom so you don't see them even the trim isn't there.

70 to 73 should bolt up and be the same other than that