In a large ziptop bag, combine the steak, Mojo Croillo and 1 tsp. Adobo seasonings; transfer to refrigerator. Marinate at least 2 hours, or up to 24 hours. Drain steak, discarding marinade. Bring meat to room temperature.
Oil the grill grate. Place steaks on the grill, and discard the marinade. Grill meat for 5 minutes per side, or to desired doneness. Transfer meat to serving platter.
In a large skillet over medium heat-high heat, add onions; cook, stirring occasionally, until starting to brown, about 3 minutes. Add peppers to pan. Cook, stirring occasionally, until starting to brown, about 3 minutes more. Season vegetables with the sazonador total and adobo; top the meat with the vegetables on the serving tray.
To serve, spoon meat and vegetables into center of warm tortillas. Add guacamole, pico de gallo, sour cream and salsa, if desired; wrap and enjoy.