The corolla ones are not super strong and the rubber mount is all one piece with the metal bracket that bolts the mount to the engine so finding something stronger that will fit is not going to be easy. You should just have some custom captive mounts made up, I have made them using suzuki spring bushes. The design will all depend on how the 5K was fitted in the first place.
This is a group A race mount which is what I modeled my mounts off.
