Im in the middle of my o2m vrt swap right now so I cant help you much with the results but I can help with what I'm planning as I've already had experience with the o2m in my bt 1.8t. The bt 1.8t is stock clutch/dm flywheel and is/has been putting down 400hp/350ishtq for the past 3 years and it has 90k miles on it total. It has just started to slip recently during 4th and higher pulls, this car hasnt seen any track time.
I bought an o2m swap for my corrado and with it already having a peloquin, I figured it already had a decent clutch to go with it but it still had stock clutch/flywheel. Said hell no , and ordered up a south bend stg3(used to be called 4)SS OFE clutch with flywheel. Full face disc rated for 475 which is what I'm shooting for at the wheels with 6262/c2 630cc combo. I plan on running this car at the strip and the roadcourse but not making a living off either. The clutch/flywheel was not cheap but when you fit the o2m in there, you definitely dont want to pull it out again