Pork Tinga Tostadas

1 Lime

10 oz. Ground Beef

1 oz. Shredded Chihuahua Cheese

2 tsp. Fajita Seasoning

4 Small Flour Tortillas

12 oz. Ground Pork

2 Tbsp. Tomato Paste

1 Jalapeño Pepper

2 oz. Guacamole

¼ oz. Cilantro

1 Red Onion