I was thinking and torsion bars are just springs and people usually replace their 15 year old coil springs so why don't people replace torsion bars? Is there any good reason or just cost inhibitive? If they sag and we just put keys on them wouldn't that just be like increasing the spring rate much higher than normal good non sagging ones? Is it possible to swap the two bars? Like left to right right to left and front to back? That would offset the sag so that you could use the old torsion keys and it would still lift it. It wouldn't be permanent but wouldn't that decrease spring rate making it a softer ride because the spring sits "higher" then? Any ideas or thoughts?