I don't have all the info you want...
But my friend Andy has a head unit go bad on his 97 cobra after 3k miles. Blew all the seals, and subsequently overheated the blower and the bearings all went out. Took 5wks to get the blower back from vortech. It was a V2 SQ.
Around the same time another friend of mine had two V2 SQ cars have blowers fail on the dyno at his shop (fresh installs) in the same manor (seals and bearings). Vortech replaced them but took 3-5wks.
There WAS for sure a bad batch last year of V2 SQ's, there is no denying it. Even the tech guy at vortech told my buddy and I when we called that they were "extra backed up" with S-trim warranty work recently.
Personally, my blower seems fine, is a little louder than it was originally, and seeps maybe a tiny bit of oil...but it still holds and makes boost, doesn't grind or whine more than what I would call "normal".