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Old 04-14-2007, 06:08 PM   #2
Frizzle Fry
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Join Date: Aug 2005
Location: Hillsboro Oregon
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Re: Coil Suspension: Stainless Lowering Blocks

Well, the C5/C6 Vette frames are hydro formed and I can tell you they are less than 3/16" They use tube "inserts" as you describe and hold up just fine. Hope that helps.
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