Scored a small block tonight from Facebook

The intake is an SP2P-318. Small ports for trucks and mileage.

Cool, Good info
So that 318 alum intake would match up to stock 318 heads (and the 302 heads) for good port flow. Just like the LD4B 318 alum 318 intakes.

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OK, sounds like the SP2P-318 Intake is built for mileage not performance like gliderrider06 says.
LD4B is a better choice if you can find them for the 318.