41 or 49 mm forks on a 93 FXR?

I’ve tried searching but haven’t found an answer. I’m new to FXRs and want to know if I find a 41 or 49 mm front end with narrow glide triple trees would it be a simple swap or are there other considerations? Or are there better ways to upgrade the front end of an old evo? Maybe Japanese take offs from some other bike? Thanks for any information.