Cal 28-2
For the rudder, try Foss Foam in Largo, Florida. They made rudders for many of the Cal's, and still have the molds. The keel is a different issue. IF the boat was made in Fall River, MA, there is a possibilility that the keel was made at a foundry in Providence. I think that the name is Broomfield or something similar. Check with them. You can also try D&R Marine in Fall River, MA. They specialize in parts for older Cal's and O'Day's.Good Luck. Mark