I have to replace the cyindar head on 02 geo prizm.

What is your question?

The cam broke inside my 2002 geo prizm "My guess from oil stravation" I want to replave the whole cyindar head but am having trouble finding it at different salvage yards. could i plave a different year model on it? Any help would be grant I don't know anything about car but my buddies will help so long as i have the parts.