73 Duster 340 Low Ride Height

Your not showing pics of the end of the torsion bar that is suspect. Its where the rear of the bar goes into the frame.
What engine is in your car and what did it come with? Could be a small block sitting on worn out slant bars. I have used slant bars with small blocks and there was still plenty of adjustment left. You can ID the bars, there is a number stamped on the ends.
The exhaust pinch looks like someone hammered in some clearance. I think factory exhaust had a pinch in that area too but that looks hammered in.
Sometimes you need to remove the upper bump stop when installing the bars to get the suspension to hang low enough.