Who HASN'T done the IMS Retrofit (and why not)?

[j.fro]

I bought my 2000 Box S in Feb 06 and it had 60,000 miles. I'm now at 152,xxx. Last year at 142,000 I had to pull the trans to fix the second gear synchros, so I had a nice look at the back of the engine. The RMS had a well established but dry velveting, so I left that alone. The IMS was dry as a bone. 140,000 miles of dirt, but no signs of oil.
With this many miles and five years of hard autocrossing, the engine doesn't owe me anything. When the time comes, she'll be rebuilt to add some serious power, and then I'll do the bearing, along with everything else.