1. Mix 1/4 cup of the marinade and apricot preserves in small bowl until blended. Set aside. Place pork in large resealable plastic bag or glass dish. Add remaining 1/2 cup marinade; turn to coat well.
2. Refrigerate 30 minutes or longer for extra flavor. Remove pork from marinade. Discard any remaining marinade.
3. Grill pork over medium heat 20 to 25 minutes or until desired doneness, brushing with preserves mixture during last 10 minutes of cooking. Serve with grilled apricot or peach halves, if desired.