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These pulley spacers are stackable with “crank hub” pullies. They are available in different lengths and can be ordered with a 2.25” female register ( to mate up to a Mopar harmonic balancer) and a 2” male register.
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You can then stack a variety of pullies. Pictured above is a single V belt with standard 2” registers. They are also available in double V belt configurations.
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Then you can add a serpentine belt pulley to drive your supercharger.
https://goodvibesracing.com/Supercharger_Products.html