In a large bowl, combine the pecans, coconut, flour and brown sugar; stir in butter. Press onto the bottom of a 10-in. springform pan. Place on a baking sheet. Bake at 350° for 10 minutes. Place pan on a wire rack (leave oven on).
In another large bowl, beat cream cheese and brown sugar until smooth. Beat in the cream, flour. syrup, vanilla and salt. Beat in the eggs just until combined. Fold in toffee bits. Pour over crust. Return pan to baking sheet.
Bake for 50-55 minutes or until center is almost set. Cool on a wire rack for 10 minutes. Carefully run a knife around edge of pan to loosen; cool 1 hour longer. Refrigerate overnight.
In a small bowl, combine the syrup and whipped topping; carefully spread over cheesecake. Sprinkle with toffee bits. Refrigerate leftovers.
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