[Jolley Roger]

I am looking at an old (68) Macgregor 21 as a project boat to get my kids interested in sailing.
I can probably get the boat for a song, but....... it has a cracked keel. Is this something i can reclad in glassfibre, or do i need to get a new cast keel???
Either way I would appreciateadvice on
1 how to reclad
2 where to get a new one, and what the price might be. I Am in the Tahoe area (Nevada side)