'95 P.A. suspension

I have a couple of friends with Bonnevilles, and I love the way they handle compared to my Park Avenue. Way less lean and faster steering response. Aside from the tire & wheel difference, what are the differences between Bonneville & Buick full size (LeSabre & Park Avenue)? I know the control arms, stabilizer bars are the same. And whatever the difference is... are those parts compatible with my Park Avenue? Thanks.

Bonneville, Park Ave, and Lesabre do not share a common chassis. The frame is similar, but not close enough to have interchangable parts. For better performance in the park ave:

Grand touring shocks
Stiffer Sway bars
Upgrade it larger wheels and tires with stiffer sidewalls.

The park ave wasn't exactly designed to be a roadhugging traction machine. Thats what GM has the corvette for...

My park ave handles awesomely for me, going around 35mph onramps to the interstate at 55 is about as far as i can push it, and thats enough for me.