11 years ago I collected money from a bunch of Royale owners and we bought the 8 piece set and split them up. It is different than the link I posted as all 8 were identical.
Frank, I would call Steele and see if they will sell you the single piece of rubber. Not sure why they want you to buy 8 pieces, Was there actually a car that all 8 mount points were rubber? Find that hard to believe.