which one do you need? the rear plate that mounts to the subframe or the "front" rear diff mount?
TBH I spent a wedge on a bling item on the front rear diff mount, works a charm but over priced, the rear diff mounting plate I tigersealed and it is rock hard now.
I jack the rear up under the diff now without so much as a movement.
tube of Sikaflex or tigerseal will do the job for a tenner