Great american boston cream pie/cake

For cake:
      3 lg Eggs, separated
      1 ts vanilla extract
    1/2 c  Sugar
      1 pn Salt
    3/4 c  Cake flour
           For filling:
    1/2 c  Sugar
    1/4 c  All-purpose flour
  1 1/2 c  Milk
      6 lg Egg yolks
      2 ts vanilla extract
      1 pn Salt
           For glaze:
    1/2 c  Sugar
      3 tb Light corn syrup
      2 tb Water
      4 oz Semisweet chocolate,
           -chopped coarse
 
  Recipe by: Great American Home Baking
  Preheat oven to 350. Grease 9" round cake pan & line with
  waxed paper.
  FOR CAKE: Beat together egg yolks and vanilla at medium
  speed until blended. Beat in half of the sugar until very
  thick and pale. Using clean, dry beaters, beat together egg
  whites & salt at medium speed until very soft peaks form.
  Gradually beat in remaining sugar until stiff, but not dry
  peaks form. Fold yolk mixture into egg whites. Sift flour
  over mixture; fold in gently. Do not overmix. Pour batter
  in prepared pan. Bake cake until top springs back when
  lightly pressed, about 25 min. Lossen cake by running a
  metal spatula around sides of pan. Invert cake onto wire
  rack. Remove pan, leaving waxed paper on cake. Turn cake
  right side up. Cool completely on rack.
  
  FOR FILLING: Mix together sugar & flour in saucepan.
  Gradually whisk in milk, then egg yolks, vanilla & salt.
  Bring to a boil over medium heat; boil for 1 min, whisking
  constantly. Strain through a fine sieve into a bowl. Press
  plastic wrap on the surface. Chill for 30 min. Using a
  serrated knife, cut cake horizontally in half. Carefully
  remove waxed paper. Place bottom layer on serving plate.
  Spread evenly with filling. Top with remaining cake layer.
  
  FOR GLAZE: Bring sugar, corn syrup & water to a boil over
  low heat. Stir constantly until sugar is dissolved. Remove
  from heat. Add chocolate; let stand for 1 minute. Whisk
  until smooth. Gradually pour glaze over cake, allowing it
  to drip down the sides. Let stand until glaze sets. Be sure
  to store this cream pie\cake in the refrigerator.
 
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