WE HAVE BEEN HAVING A LOT OF RAIN LATELY. WE PURCHASED THE CAR IN JANUARY. AFTER A HARD RAIN THE FLOOR BOARD ON THE PASSENGER SIDE FRONT WOULD HAVE ABOUT 2 INCHES OF STINKY WATER STANDING. WHEN INVESTIGATING ON LINE I GUESS THIS IS A ISSUE WITH MOST MUSTANG OWNERS. IF YOU PARK WHERE ANY LEAVES OR DIRT CAN COLLECT IN THE FIREWALL UNDER THE WINDSHIELD. THERE ARE TWO RUBBER SEALS THAT GET PLUGGED WITH DIRT AND STUFF WHICH CAUSES THE FIRE WALL TO FILL WITH WATER AND BACK UP INTO THE CAR. IF YOU PULL THE PLUGS OUT CLEAN OUT THE DIRT THE WATER FLOWS OUT. THE FIRST TIME WE PULLED OUT THE PLUGS WE GOT ABOUT TWO GALLONS OF NASTY WATER THAT POURED INTO THE DRIVEWAY. WE CHECK IT EVERY COUPLE WEEKS NOW, AS LONG AS WE CLEAN PLUGS NO PROBLEM??? IS THERE A PERMANENT FIX FOR THIS ISSUE. WE HAD QUITE A SMELL IN THE CAR HAD TO HAVE IT DEEP CLEANED!! *TR