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Discussion Starter #1
Anyone know the GM part # for the Rear frame Stiffining Brace???
 
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Discussion Starter #2
Do a search on "Buick Frame Brace".

That said.....it's relatively flimsy, and don't expect any detectable frame stiffening from it. In other words, if you're buying it only to stiffen the frame, don't waste your $$$....
 
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What Ed said...but to add to it...I took mine off last night and wow did the exhaust drone more.

My system drones around 1500-1700 RPM with the brace on, and it isn't a bad drone, and I actually like it. With the brace off i found the car droning from 1100-2000 RPM and it just wasn't a cool drone like with it on...so in that respect, I'm glad I spent the 20 something bucks on the buick brace.

A tow hitch would do the same thing as well.
 
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And to also add, I will say that I noticed a pretty nice difference in stiffness to the rear end of my car when I installed the brace. Basically I used to get a little shudder when hitting bumps in the road going around frwy turns at high speed. That no longer happens since installing the brace. I even went out and checked doing the same speed on the same road, in the exact same spot I used to feel the shudder at.

Just my opinion, some cars react more to things like this than other's.
 
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