With the shape of the deck lid on 2014's I don see it bolting up properly at all on a 2013 deck lid. You will probably have to just try it & see how it goes because I doubt anyone else here has tried it.
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2020 GMC Sierra AT4 6.2L
WTB - 2010 Camaro 1SS or 2SS, Aqua Blue Metallic, A6
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