The unrestricted really has nothing to do with it, and the 99/00 as well as the 2001's ecus cannot be flashed, so they need some parts upgraded to the 02-07 models to make them easier to tune(PC3's aren't really around anymore).
However, that doesn't hurt their value either.
Location is a bigger deal, as that bike may go for $3k to $5500 roughly, depending on where you are.
You can post it in the for sale section here, or post pictures and location in this thread, and get opinions on a sale price.
welcome to the org