16 didgit number engraved into both heads
Nov 21, 2011 | 12:45 PM
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Staging Lane
Joined: Feb 2008
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From: baltimore ohio
16 didgit number engraved into both heads
i noticed when tearing down the heads on the 5.3 there are 16 didgit numbers engraved into each one? the number is 0004201743029864 what is it and is it important?
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