Thanks for the replies and rubber mount sources-although after seeing them, they are just rubber washers, as Bill stated. The way the old ones looked, I though they were formed with a radius!

Evan, thanks for the update on the plastic sign material! And now I know that my missing side is just the mirror image of the other side. If I get Scott's drift- just design, fab your own.

Now if I could just deal with those tiny water hoses near the oil filter on this 2.1!  Cooling re-hab phase 2 in progress

Thank everyone!