Rear Sway Bar?

[FMG CAMARO]

I read an article a couple of years ago in Chevy High Perfomance stating that a rear sway bar in a first generation camaro hurts handling. I currently have a front end rebuild kit from PST, bilstein shocks, hotchkis springs front and back and a hotchkis front sway bar in my 68 Camaro. I did not get the rear sway bar. When cornering at moderate speeds the rear end feels a little loose. Will a rear sway bar help correct this? Are you guys running rear sway bars with your suspension setups? Any help would be appreciated. Thanks!