1987 Buick regal (v8) sway bar size??

[gnfanatic]

hey guys, my gf's suspension needs shocks and front sway bar bushings. problem the front sway bar comes in diff diameters. The bushings call for a 1 1/4, 1 1/16 or a 1 3/16. I am not sure which one she needs, any chance you guys know what dia swaybar this car comes with>?>?

thanks!