i picked up a pair of these: Mustang Molded Mud Flaps - Rear Pair (99-04) at AmericanMuscle.com - Free Shipping!
they easily slip on and are tight, with the wide tires the paint is getting messed up back there and/or dirty everytime i take the car out. can remove easily and put back on, no drilling or nuts and bolts, has a channel that fits over inner fenderwell. was skeptical if was really really secure so had to do a few 150mph runs, they are still on there. looks ok on car if you notice them.
they easily slip on and are tight, with the wide tires the paint is getting messed up back there and/or dirty everytime i take the car out. can remove easily and put back on, no drilling or nuts and bolts, has a channel that fits over inner fenderwell. was skeptical if was really really secure so had to do a few 150mph runs, they are still on there. looks ok on car if you notice them.