Oldies custom fenders

looking to get the drifter fender for my vulcan classic from them. I know people have installed drifter fenders on their Vulcans but would like to know if anyone installed one from this company. If you have is it a direct bolt on or will mods have to be made? The owner is a harley guy and isn't sure and from reading other posts I think there is a lot of mods to be done. I believe they made some adjustments to the mood but not sure.