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.
The connectors will help alot along with boxing in the torque boxes to stiffen up the chassis. But will work even better once you upgrade your springs, shocks, use polyurethane bushings, bigger sway bars and wider better tires. By themselves you will notice a difference but not as much as if you took care of the rest.