I thought the noise was coming from a hole in the exhaust but i have replaced the exhaust and its sill there. I then thought it was the fan clutch, i removed it and its still there. I checked the air intake and air filter and its without holes. it only happens when driving and acceleration. 2nd gear at 40miles and hour. my dad thinks its metal on metal, his thought was the drum breaks. any thoughts, attached is a video from the rear. skip to 2:50
https://youtu.be/I3By32QhEEU
https://youtu.be/I3By32QhEEU