That's a one piece flange... it's not like they installed one backwards or something. It clearly was cut and produced for some purpose. What that is, and whether it was a mistake, I do not know, but I wouldn't label this as a "screw up." Maybe they had an issue with one of their jigs when they swapped from one flange type to another, who knows until they trace the source of the fitment issue.
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'10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake
'08 Evo X - built motor+trans | BB-X @ 32 psi | CH3OH | self-built+tuned - ??? WHP
'01 Galant V6 - built motor | GT35R | self-built+tuned - 550+ WHP (retired)
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