Rear sway bar question

[Pyasher]

Has anyone ever installed a rear sway bar on a wagon? A heavy duty front and rear bar came with my 1972 Chevelle wagon when I purchased it.I put the front bar on and now the rear end feels loose. I also installed a set of rear boxed control arms. Pictures of a rear sway bar install would also be helpful to give me an idea as to what sort of parts I need to assemble.