So I'm getting ready to paint a few sets of tins and one of them is for a 99' Fatboy. When I bought everything I was unable to find a rear fender for the 97-99 Fatboys. I did, however, purchase a rear fender for a 90-96 with the understanding that the only difference is the cut out up front for the electrical box. Does anyone know the dimensions of this cut out so I can get moving on this? much thanks!