I have an M-9424-A351 that was "bunged" for me by Wilson Manifolds. These manifolds were made by Roush and since the C302B heads were current when they were made, the ports are slightly smaller than the older A3's intake ports. I would part with it but I'm not sure if it could be made to work on a 9.2" (351C) block as the A351 is the 9.5" (351W) block version.
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