There is a great shop that had been specializing in this conversion for a long time. Beck's Machine & Tool, on the CA coast. Their ad in the Inliner's Newsletter states, "Specializing in...The Full Flow Chevy 216". They also can covert to hydraulic lifters.
Give them a call at (805) 925-7411, also they have an ad running on the home page of Inliner.org/becks
