How to get rid of understeer in a 1970 340

Louie70Dart said
Reason I ask is I wonder if the body couldn't be flexing under torque when cornering. Are they easy to R&R? That I don't know. I have heard of people who bolted them in, and others who burned/welded them in. Some even went so far as to contour them to fit the under belly, then had a good clean weld the whole length.

I don't think so , no cracks in the paint in those places that crack when there is flex , also if i jack up one side of the car I can open and close the doors and they line up and sound right . It's a pretty olid car , but the connectors would help , just a big decision .