I have a Quickor rear sway bar on my truck. Over three years ago the owner used my truck for his prototype. It looks close to the camaro sway bar but is designed for our trucks.
You can contact him through
http://www.quickor.com/
The swaybar clamps to the axles just like the camaro bar. But the width between the ends are more matched for a trucks frame rails. I think it's a 1" bar and I'm sure he can make you whatever diameter you want.