to get the best result, you should have the flywheel and pressure plate balanced together to eliminate run out that causes vibration. most people don't do it, but if you have to have it balanced anyways, now is the time if you have the pressure plate. Another trick is to have the flywheel lightened to reduce rotating mass - there is a raised portion on the back of the flywheel that can be ground down to reduce weight without weakening the flywheel. I did it on Geronimo about 30 years ago, and no issues...