Thank you very much for the detailed reply. I will be contacting Greg.Curt is right, my ability to think clear in the mornings can be a little rough at times. The dealer should be able to reference the "mount" by the vin number on your car if you want the entire assembly, mount with the rubber pressed in.
I recommend keeping your "mount" as long as it's not cracked or damaged. Look into getting the prothane inserts, I'm currently in the process of replacing all 4 of my inserts with prothanes. Give Greg a call at gspec.com 760-535-2259, he sourced the 2 lower inserts for me for about $55. If you just need 1 insert, it will probably run you somewhere about $30.
Here is a link to the mount. http://www.gspec.com/p-3486-motor-mount-passengers-side-g20-x-member-see-notes.aspx
Here is a link to modify the bottom mounts on a P11. http://www.g20.net/forum/showthread.php?t=39375&highlight=prothane
You might need to search through the threads and figure out the passenger side modification. My browser is running like garbage, and I've gotta finish up on some things here at work. Hope this info helps.