There was a member that bought some heads from Avant Salvage. He assembled the engine, test drove it , parked it in the driveway , tried to start it the next day and it was hydrolocked , wound up bending a rod and I think cracked a piston, Avant stood by the parts but the guy ate all his own labor. Avant admited he got the heads from Clearwater or Alabama cyl heads. I think the members name was "Cowracer" IIRC, havn't seen him post in a long time and I can't recall all the details , been a few years.