It looks like I'm the first.
My car came with an MSD 8350 with the vacuum advanced locked out (for some reason - not that the car was ever tuned or dyno'd).
I like vacuum advance and was going to put it back in but, as I did some research, I ran across these guys:
They seem to be a new player but this seems WAY better than fighting with advance springs, stop posts and vacuum valves.
Looks pretty impressive!
AND now I don't have to try to get the f****** snap ring off the MSD to replace the vacuum can.
Will let you guys know how it goes.