I just went throught that process. The hardest part is lining up the fender.
When you line up the rear fender and drill the holes. Make sure you use the washers between the frame and the fender if not its going to squeeze and be off line with the tire. It took me approx 4 hours to line up the fender,drill the holes and figure out the most important thing were to use the washers. Also i had to use the stock spring because the lowering spring was to low. Pm with any questions. Also if you are going to use anything besides the stock seat. That also is going to be a b---tch. Good luck