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The d1 already comes with an 8 rib setup.
The bov as an upgrade is just for sound. Not worth the extra money.

The crank pulley you have is fine. Just make sure you don't have an under drive pulley installed.

As far as belt slip, I don't have any. Shifting at almost 6800rpms with a 3.9 pulley making 11.5lbs of boost, I'm good to go
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