Melt bittersweet chocolate as directed on package. Cool 5 minutes or until slightly cooled. In large bowl, combine cream cheese and sugar; beat until smooth. Add eggs 1 at a time, beating just until blended. Add cooled chocolate; mix well. Add 2 containers sour cream, instant coffee granules, vanilla and salt; beat until smooth. Stir in 36 of the truffles. Pour into crust-lined pan.