Hi. I was putting the horns back on the Challenger and I find out that there was no hole in the new inner fender. The body shop replace them and they are not 1970, so there is no reinforcement to hold the horn braket. Last summer I went to a car show and took the dimension to build some but I forgot to take the size of the bolt and want kind of tread I need. If some body could tell me the size and the tread type of bolt that secure the braket to the fender I will be able fix the mistake of the body shop.
