I looked around in my Haynes that I have for my Legacy, it has lots of the same parts. And the part is there but I couldn't find any. The nuts and bolts that hold on the mount itself are not on there tight maybe 40 ft lbs. But the ones that hold the middle cross member on are very tight. I needed to use a breaker bar, I'd say they were closer to 80 ft lbs. If anyone knows for sure let me know and I'll add it to the page.
I went for a quick drive and it seems like with the new mount the driveline lash has been reduced considerably. It's a nice mod. BTW I don't have the stiffer motormounts but I do have a larger pitch link. I didn't notice any more noise in the cabin but I think I get some vibration at different RPMs nothing drastic though.