Some of the old FAF catalogs had a plueprint of a head pulling plate, with dimentions. Many times some of the parts dealers or repair shops will lend you their puller. Jim Riff
The sketch Parker sent along (thank you Parker!) is from an old Ferrari Club of America News Bulletin tech tip. I remember that it originated from John Hajduk, who had a shop in the Chicago area at least into the early 1980's and later, I think Indiana (?).