Boil pasta until al dente and drain. Sauté garlic, mango, pineapple, and red pepper in pan. Then add clams, heavy cream, scallions, garlic and seasonings. Heat at medium high temperature until sauce reduces and starts to thicken. Add pasta to pan and serve in large bowl. Garnish with lime twists in center.
*For a low fat version, replace heavy cream with the reserved clam juice from clams and reduce jerk seasoning to 1 tablespoon.