Each bolt had a drop down bracket on it too lower the radiator. I don't know if they put it on wrong or not. But they screwed the brackets on with the stock bolts. Then stuck the bracket bolt through the core support and used a lock nut too hold it to it. Couldn't get to those four lock nuts until I removed the the grill, couldn't figure out how to get the grill off until I removed the bumper. It was aggravating, but The Natty's got me though it. That make sense?