It should be on the KGIS,
https://www.kiatechinfo.com/Index.asp. You can register for an account and then browse for the section discussing body work. You need to use Microsoft IE 6 or later, I think...says what you need on the link above.
If it's like my previous 2001 Santa Fe and it's a straight replacement for the entire side mirror, it's very straightforward. It had 3 bolts and a wiring harness and that's it. I didn't have to remove the door panel. Just had to pop out the tweeter and the bolts and connector were there.
Have a look at KGIS and then you can decide for yourself.
