This is a dual plane single four C5AE 9425 N Factory Medium Riser. Runner/plenum divider has been cut down some. This is obviously not seen with the carb in place and was typical for people to perform this mod to increase flow at higher RPM's. Zero cracks,corrosion previous repairs, or helicoils. Pretty rare intake have only had a couple over the years. They were also available in Magnesium this in the 28lb Aluminum version.
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