trying to ID

My son bought this mini bike. The mini bike is missing the gas tank and brake(s). I have been to a few shops with no clarity on what type of mini bike it is or if they can even find what gas tank or brakes it needs. I would really like to get this bike up and running so that my son can ride. I'm in San Bernardino county, CA and have been to a few shops around the area. So please any help would be greatly appreciated.