My guess is I won't be able to make the difference with my eyes closed. I could not do it between the 3.4L (P2) and 4.5L (P1) Zytek engines back in 2009-2010, neither could I between the 7.0L (GT1) and the 5.5L (GT2) Corvette in 2010. It will be the same here.
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