More info on the motor. I got the heads off OK, there is no rust in the cylinders, only a light black coating on valves and head(normal for a running motor), Pistons are .040 and look good, No ridge at the top of cylinder. Valves are marked ford 015 and ford "R" U.S.A.IS. There is only one crack that I can see and that is between the center small water hole and stud just as R Pope described. I think I might be able to have it cleaned, buy new bearings and a set of rings and gaskets, hone it out and put it back together.