Call me a crazy person, but unless you really want the authentic seal to keep things, well, authentic, I'd suggest going another route. I really don't like the rather poor "seal" this type of shape makes with the fender. If you really want to prevent water from going "over the wall" so to speak, I'd suggest something like a door weatherstrip like those found here:
http://www.mcmaster.com/#rubber-bulb-seals/=13zgp4c
You can buy lots and extend it as far as you think it needs to go. If you install it with the "grip" just barely started on the pinch weld, then apply the fender, it will push down as far as it needs to, to make a perfect consistent seal along the fender length, as that gap is not consistent. One could even add a small bead of sealant alone the top of the seal to really stem the tide. Ok, enough nautical references....
If I can find the specific one I used, I'll post it. Edit: Here it is. 1120A232 bought 10ft.
I secretly hoped that the Kia door weatherstrip would work. It won't, bulb on the side rather than on top. Then I could say I have it on the doors, hatch AND fenders. hmmm perhaps I shouldn't add fodder to the "Crazy" thing...
Oh, if anyone needs a few of the original clips for their "authentic" seal, let me know....