Engine balance on a Series 3 top swap (Page 2/2) jelly2m8 FEB 18, 05:48 PM quote Originally posted by olejoedad: Looks like I need to dig up a Series 3 N/A flex plate to match balance to the Spec flywheel. This is all you have to do, have the Flywheel balance matched to the flexplate that would normally go to that rotating assembly