[Ackattack]

I have one on the rear from a LS1 camaro.

However, I recently read an article (I think someone one posted it on here) where some magazine did some testing and got better slalom times without a rear bar.

However, the rear sway bar can be used for tuning the suspension depending on the size. Too large of a rear sway bar can induce oversteer. Yet having a large front bar and no rear bar may cause additional understeer (I assume that a front end heavy pickup will have understeer pretty much regardless).

So if you have a large front bar, a small back bar may help a little. It would also help with towing and drag racing as well.