quote John Logan:

Beware of some of the after market engine mounts! Compare them with the original to make sure they are the same height, rubber thickness and position the engine in the right lateral position. Some of the Tiawan or China made mounts scrimp in every way.

John Logan Sr.

Doug Jennings advise is to drill them and put a just snug fitting bolt through them.I bought a new pair and 1 seperated as I was installing it.It was replaced at no extra cost
I will be doing this step to mine.