I have a set of 1957 Ford G Y-Block Heads and rocker assemblies for sale. I took them off a running motor that ran strong. I can have them checked by my local machine shop if you are interested. Also have a 1957 Ford T-Bird 4V intake manifold (Holley Pattern) and a 1957 Ford Y-Block manual flywheel. Parts are in Central Florida. Make me an offer. phil@lakefrontflorida.com