Since Ground Control is local to me, and I know some of the ppl that work there I was able to find a legit setup if you want to run solid upper mounts in the rear of your car. Its basically an aluminum disk with threaded inserts and a urethane perch for your spring.
If anyone is interested let me know and I can talk to the guys at ground control and see if they will make up a few sets.
small edit: trying to get a price estimate out of them right now, I would assume they will be less than $80 for a set...