These are the splash guards you need. I would have like to show you when they are installed, but this is the only pic I have, (car is at the body shop at the moment). They fill the space between the end of the cowl dash and the fender. The bottom hole of the guard align with the hole you are talking about. The lower hole use a 5/16" bolt while all the others holes use metal screws and flat washers. Splash guards part numbers are 2895554 & 2895555.
Robert