cal-tracs question

Any leaf-type spring (mono, SS, stock, whatever) will exhibit spring wrap, given enough torque, provided something else doesn't break first. Mono-leafs are obviously the most prone to this phenomenon, so I suspect that is why Caltrac pushes their combination. I'm also sure the monos are good in other ways, so along with the Caltracs, probably makes a really sweet package.

People say you don't need anything with the SS springs, because they are stiff enough as it is. Probably so in most cases, but refer to #1 above. I'm running homemade Caltracs with SS springs on my Duster. Overkill, maybe. But it is way solid out back and hooks real good with a 340 pushing through the open diff in it now. No worries about the driveline if I ever install the 440 I have waiting in the wings.