We are pretty sure that my wife's car has a light weight flywheel, only because it seams to rev faster then other RSs i've been in. Can't say def though. But with the "street clutch" (again not exactly sure what's in it, but it's not stock), and the "light weight wheel" it is a blast to drive. Takes a little practice, but once you get it shifts are really fast, launches are solid, the power band seams to be raised just a little, and it seams faster then most RSs i've been in too.
I've heard that the light wheel makes a big difference as far as power, but you loose some low end. Whatever it does, some people like it and some don't. I don't complain!
Seriously though i don't think she would have a problem if you wanted to try it out and see if you like the feel of it. maybe at the GC drive or something.