Quote:
Originally Posted by particlewave
Replacing the IMS bearing on a '98 is not really necessary. There's a 99% chance it will not fail.
Stay away from lightweight flywheels unless you plan to have the crank/flywheel balanced. The 986 does not have a harmonic balancer. Crank balance is achieved with the dual mass flywheel, so installing a lightweight flywheel could result in vibrations and even broken crankshafts. 
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Learn stuff everyday! My 996 turbo owner said that was a good thing for more performance.