67 firebird deck lid question

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I bought a 67 firebird boday a while back that someone had started on and both full quarters were replaced. When fitting up the deck lid it wasn't much of a surprise that the gaps on both sides are way off. The gap at the front seems to be ok but my question is should I buy an after market deck lid? The deck lid I have looks to be an original but had some surface rust on the bottom side and isn't perfect so since I have to fix the quarters anyway would it matter that much? I guess my main concern is the at the front, not sure if the repop deck lids are bad fit all the way around or mainly on the sides.