what we did with my 92 motor mounts was pull them one at a time, clean them, and fill the holes and cracks with silicon... let it dry and then fill the whole rubber piece with silicon. after, i painted the silicon/rubber mount black and clearcoated it... installed it and almost all my wheelhop went away. it still does it every now and then, but atleast not all the time... note on this picture they have not all been done yet.