In a medium saucepan, combine the heavy cream, milk, 6 tablespoons of the sugar and the salt. Place the pan over medium-high heat; when the mixture begins to bubble around the edges, stir in the unsweetened dried shredded coconut. Allow the mixture to begin to bubble again, then remove from the heat, cover, and allow to steep for 20 minutes.
Strain the mixture through a fine-mesh sieve into a large bowl, pressing on the coconut to extract as much liquid as possible. Discard the coconut and pour the infused cream back into the saucepan.
In a medium bowl, whisk the egg yolks to break them up, then whisk in the remaining sugar; set aside.
Place the cream mixture over medium-high heat until it barely begins to simmer, then reduce the heat to medium.
Ladle out a scoop of the hot cream mixture and, whisking constantly, add the cream to the bowl with the egg yolks. Repeat with another ladleful of the hot cream mixture. Using a rubber spatula, stir the cream in the saucepan and gradually pour the egg mixture from the bowl into the saucepan.
Cook the mixture over medium heat, stirring constantly with the rubber spatula, until it thickens and coats the back of the spatula (it should register 170 to 175 degrees F on an instant-read digital thermometer), about 1 to 2 minutes longer.
Strain the hot mixture through a fine-mesh sieve into a clean bowl. Place the bowl into an ice water bath and stir occasionally until the mixture has cooled. Cover and refrigerate until it has thoroughly chilled, at least 2 hours or overnight.
Freeze the mixture in your ice cream maker according to the manufacturer's instructions. Add the sweetened dried shredded coconut and dark chocolate chunks during the last minute or so of churning. Place in a freezer-safe container and store in the freezer.