Congratulations. It does look really nice. Ilike the color quite a bit. Hope it gives you many years of service without any issue.
As regards the IMSB, well my 99 has a double row bearing, so I don't worry about it. If it does fail, it is just an opportunity to find a 3.2 911 engine to pop in as a replacement.
In the mean time, I just plan to replace teh IMSB during my next clutch change and every clutch change after that as a preventative measure.