I am really surprised this didn't kick up

The video put me in a dilemma because I have my college- hood 72 dart swinger that I put connectors on. High sentimental valued car. I have never driven it with the connectors but I can say back in college, the car felt like a row boat in the parking lot. Bad low speed body roll, I mean bad, but it was worn out with saggy doors and all. I had hoped the connectors would fix all that ...... but now I'm not sure.