You might be able to go to a janitorial supply
or restaurant supply house and find some rubber
mats. You can cut them to size and use contact
cement to put them in place. Otherwise, I think
your stuck with going to a step plate, available
thru many parts houses. I saw a car at a show
one time, done with rubber mats. It came out
real nice and looked like it was from the
factory. Cecil...........