Eh, plenty of us are running light flywheels, I love mine. Some would argue that you should only run a LWF if it is balanced to the engine, and on a track car I would agree. What is critical, is that you change the rigid clutch disc for a sprung unit.
You should also be able to retrofit the 3.8 engine's harmonic balancer to the pulley side of the motor to further smooth things out.
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Boxster S
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