Common suspension parts with Buick Riviera?

[nuck]

I have a friend who is trying to enhance his faithful 97 Riviera. The car is kind of an odd thing without a lot of direct support. These are both "G platform cars" but the Buick has the Grand Prix powertrain.

Does anyone know if suspension pieces from the Olds all interchange with the Buick? Do they have the same air suspension? Do second generation Aurora parts work on the first gen cars? Is there an aftermarket supplier? And finally, is the stock air suspension tunable, or if you want to make the cars handle, do you automatically scrap the stock shock system?
Thanks for any responses.

Edit - Looks like the Late Pontiac Bonneville GXP "H Body" may in fact just be a G Body variant. Do the Bonneville parts also fit the early Aurora, and if so, other they any better than the Aurora sports suspension pieces. Thanks

[Randy T.]

There are many cars and many parts that will interchange with our cars and Buicks. Buick Lucerne has many of the same parts.

aurorah.proboards.com/index.cgi?board=Zoom&action=display&thread=25759

Here is another thread, some of the info is not correct.

I have newer Bonneville front struts on my '97 Aurora, a '04 Bonneville GXP strut tower brace and a '98 Buick Ultra rear sway bar along with my '07 Impala front brakes.