No there are no fender shields for rear fenders in khyber.
Do some heavy rubberised coating underneath the car to prevent it from rusting again that would be of great help and will also reduce a little road noise.
Known as compound in my area you know mechanics have their own language's.
Do add those ventilation flaps at rear they would also reduce the noises comming from outside and will also serve the right purpose for ventilation.
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