1. Chop garlic with 1 teaspoon salt on board; press with side of large knife to form a paste. Divide and rub paste on both sides of steaks.
2. For the spice rub, combine chili powder, five-spice powder, 2 teaspoons salt, sugar, pepper and ginger in a small bowl. Divide and pat onto both sides of steaks. Place steaks in a large resealable plastic storage bag and seal; marinate steaks in the refrigerator 2 hours.
3. Oil and heat grill. Grill steaks over medium-hot* heat, 9 minutes per side for medium-rare (145 degree F). Serve with grilled onions, if desired. Makes 8 servings.