I just thought I would close the loop on these motor and transmission mounts.
Some of the early builds used the stock WRX motor and transmission mounts with some excessive movement under high load.
I saw videos showing up to an inch of front to back movement....!!!1

I bought the group N trans and motor mounts.
Fit was great.... dropped right in.

During recent Dyno testing I was looking closely for movement.
Very little movement under all loading conditions.

I'm happy with my choice on these ......