I put the cats on my 2000 SS when I did longtubes last year. I only had 1 cat on at first until I had enough time to put the other in the y-pipe, and even with 1 cat it was an ugly raspy sound. It will help with inspection and if you get pulled over by the police.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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