It's not an a body but it's a mopar

Yea the frame rails do flex some. I fabbed up a steering box stabilizer a few years ago
if I hadn't I'm sure it would have fell apart by now lol. I upgraded to the 2004 track bar
to get away from the ball joint on the stock bar. Done all new ball joints and axle u joints
and it drives a lot better than it did I believe the new crossover steering and steering box will help some more. One last thing to after all that is upgrade the steering column joints