I was digging around on Ebay and found this. If I knew what was all involved in the conversion I would do it myself. Anyway, seems like a good deal.
SuperCharger

You can get them cheaper than his buy now price, probably less than $200.

If it was a GenV, then $350 would be a great price.

He was gonna use it on a cavalier...

Don't laugh. A guy with a 3.1 Sunfire cut a hole in his upper intake, mounted one, and blocked off the old TB. He had to cut a hole in the hood, but it worked.

How did he mount an M90 on that small of a motor? I would think maybe an M62 would work, but not an M90.

Plus the cavalier has a smaller motor than some of those sunfire GT's, right? I have no idea but don't most cavaliers have a 2.0L or maybe a 2.4L?

Some Cavies came with the 3.1 as well. The M62 is borderline for a 3.1, so they can make use of the M90 just as we can make use of an M112.

A setup like that must've required custom components like a new lower intake manifold and fuel rails, etc.

Are there any cars that came with the M112 from the factory as of yet? Just curious.