rear sway bar recommendations

We ran big torsion bars (1.14") with a 1.25" front sway bar and a .75" rear bar on my son's old Barracuda (383/4sp). Handled great both autocrossing and on the highway. I have a factory big block front sway bar along with factory big block torsion bars on the front of my '67 Barracuda convertible (440/727). We have the same setup on my other son's '67 Dart GT convertible (440/4sp). While I haven't driven the Barracuda yet, the Dart is a great highway cruiser and handles well. For a rear bar, since I am cheap, I kept the bar from a '99 Durango I parted out several years ago. It looks like it will fit the A-body rear well. I will figure out later whether I run it or not.