Stillen U.D. pulleys help.
I ordered stillen underdrive crank pulley and belt, after talking to my shop about the install they informed me that it would replace the damper which I didn't know was fluid filled to aid in engine vibration. Is the vibration that serve with the U.D.? Would NST pulley set work with the stillen U.D.? Or should I just try to sell them?
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