| It's pretty interesting that on the newer Z06's they replaced the fabricated stainless steel exhaust manifolds with ones made of cast iron. Cast iron holds up great in high temp applications. The Z's manifolds were made of cast iron also. Never heard of any widespread problems of them cracking. Also, I didn't know that the 95 ZR1 weighed so much. The 90's or 91's only weighed about 3300 lbs.
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