Hey just read your thread, very intertesing build! i am the guy who posted the 300sd 0-60 video today, i have a question about your flywheel though, you said you shaved a 240d one down to 7.5kg thats very light for a om617 even lighter than my m110 which is 8.5kg, my question is how have you found it? with my m110 fw i have driveline vibrations under certain conditions and a rather loud "getrag rattle" at idle in neutral, have you experience anything similar to me? IF you you haven't maybe the flywheel is not my problem? I am in the process of buying a 300gd flywheel 17kg and bigger clutch thand the 300dfw I will probably shave off around 2 kg though, Oh and you said your clutch is slipping does your 240d fw have the smaller clutch, the m110 fw has a 230mm clutch, it might be an option for you.