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Old 12-30-2020, 03:28 PM   #13
s346k


 
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Drives: like an old lady
Join Date: Jun 2012
Location: indiana
Posts: 2,485
if any of you recall, the ls1 lid had the same raised plastic waffling. the aftermarket lids did not. the absence of said plastic made 0 difference performancewise. i'm guessing it is a sound deadening tool.
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