1970 Dart with collapsed suspension...

Well !!DUH!! and by that I mean YES!!

There are so many things "that could be wrong" and



maybe................nothing.............maybe.........in the decades that this car has been hanging around maybe SOMEONE wanted it "low" and just CRANKED DOWN THE ADJUSTING NUTS

OP you need to do a complete evaluation of the front (and rear!!) suspension AS A WHOLE

Start by wandering over to MyMopar and download the closest you can get for a correct year factory service manual. You may have to settle for Dodge vs Plymouth, etc
I only mention it because so many on here jump the gun and spend wads of cash first without ever looking.