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you should purchase and install the following parts before supercharging a gt: L67 Lower Intake

L67 Harmonic Balancer

L67 Heads

L67 Throttle Body (I think)

L67 Fuel Rail

Supercharger Belt

Lower Intake Gaskets

Supercharger Gasket

Head Gaskets

Valve Cover Gaskets (? Maybe depending on age)

Pair of O-Rings

Throttlebody gasket (unless it is still attached to supercharger)

MAP and Boost Bypass Wiring adapters

GTP PCM

tensioners and idler pulleys

valve covers

valve cover gaskets

fuel injectors

4t65e-hd transmission

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Q: What mods are needed to supercharge a 2003 Grand Prix GT that is completely stock?
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