While I certainly can't comment whether the xi will hold up long term with forced induction, I tend to agree with the speculation above. Sure you could bold on a kit....but will it all work together harmoniously without prematurely wearing other components? Who knows.
6 months ago I was seriously deliberating installing a SC on my XI. I wanted the car to be a bit more fun and more powerful. However, then I realized with the stock gearing, I'd need a 6 speed manual instead of my 5 speed manual to keep the revs sensible on the highway. Then heck...bigger brakes....etc.
In the end, I kept my XI stock as a reliable daily driver and bought a well maintained 2002 M3 as a fun second car. Smart decision in my honest opinion.