Preheat oven to 350 degrees F. Put SPAM®, bacon and pork in food processor and pulse briefly to chop fine. Do not puree.
Place mixture in large bowl with remaining meatball ingredients; mix well to combine. Using your hands, shape mixture into balls, 1 to 2 inches in diameter. Arrange in casserole pan.
Combine sauce ingredients in small pan. Bring to boil. Reduce heat to simmer for 2 minutes, stirring frequently. Pour over meatballs.
Bake for 15 minutes, baste meatballs, and turn them in the pan. Continue baking another 15 minutes or until internal temperature is 165 degrees F. Baste occasionally with sauce. Serve on rolls, adding pan sauces on top.