Yesterday I popped off to a local salvage yard and managed to find a rear sway bar from a 2000 Cadillac SeVille STS. The FE3 'Sport and Handling' bar. To my surprise, for $35 I got the bar, body mounts, end links, and body mount bolts, all of which were in like-new condition due to the low miles of the donor car. I stuck them on my 2000 Buick LeSabre, which previously had NO sway bar in he rear whatsoever, and after 20 minutes of the easiest mod I ever did to my car I was out for a drive.

Oh. My. God.

It is so much better. Low speed turns in residential neighborhoods are no longer pitchy rolly affairs bookended with queasy upset stomachs. The steering wheel feels like it's doing something, and there's a bit more resistance when turning it. Steering input is much more immediate. Everything about the car gets made better, even the ride.

My question is, with how dramatic of an improvement this single mod is, why the hell wasn't it standard? Even a shitty sway bar, like the one offered on the LeSabre Celebration Edition with the Grand Touring package, would help ride quality and boost the car's appeal massively.