I had the same happen to me. That's why I shaped some sheet metal over that area and removed the rear section of that fender. To get the coolant in I had to pour some in then rev it up (while it was cool already) so the pump would force in the fluid. When the temp started rising too much I stopped it for a few minutes to let it cool then added more and revved it again to about 2500 or so just to get the water pump to force the fluid through. Like matt said there is a procedure to do it easier but I didn't know it at the time so just had to keep revving till it held a good temp, drove it home and refilled one last time.