For sure AN-16 is overkill. The argument is the AN-12 fittings are restrictive. I have not seen evidence that it would cause problems. Since I was starting from scratch, I figured -16 could not hurt and is not much more expensive.
Here is a comparison of AN-16 fitting and hose compared to an OE SC hose and fitting.
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Gordon
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'71 911 Coupe 3,0L
outlawed
#56 PCA Redwood Region, GGR, NASA, Speed SF
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