Yes, that's all true. I'm doing my Los Angeles built 71 Dusters springs now, problem is that all of the survivors I've seen were Hamtramck cars (which were all painted black). My cars originals were missing so no good for reference, other original LA cars I've seen appeared to have natural springs but so far none of them were 71 Dusters so I can't be 100% sure yet. So, I'm going to do them up natural and if I learn that they should be painted it's an easy fix to pull them for a paint job, not so if done in the reverse.