What type of torsion bar do I have?

Hello
currently the front end of my 440 Dart is all apart, I am replacing all the bushings, upper all lower ball joints, I had the steering box rebuilt by firm feel.
I noticed before I started this job that the front end was very stiff.
If I pushed down on the fender, there was no spring, I would almost have to lift the fender back up.
My torsion bars are orange in color, could someone tell me what this means?
My shocks have no labels to identify the manufacturer, but they are very hard to compress.
thank you
George Gerhard