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gremlinsteve, stick around we are not going to let this site go the way of many boards out there. There will be no finger pointing and we are not going to try to figure out who is right or wrong, we are all adults here. From now on anything that can even remotely be considered a personal attack will be deleted.
I have run DSS one piece aluminum in my car for last 8000 miles including 950 on track and at speeds up to 145 mph. Zero vibration at all and I think maybe better nvh than stock. Just did a retourque check of all the bolts and the are all at spec. Have not used a dyno tech but they do have a strong racing heritage.
Those are my facts.