I have a 2007 pontiac Grand Prix GT supercharged and I'm wondering what mods I need to drop to a 3.6" pulley.
I have MSD wires and Coils, 160 TS, NGK TR55 plugs, and I'm ordering Headers and Throttle Body spacer.
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06-14-2013
I have a 2007 pontiac Grand Prix GT supercharged and I'm wondering what mods I need to drop to a 3.6" pulley.
I have MSD wires and Coils, 160 TS, NGK TR55 plugs, and I'm ordering Headers and Throttle Body spacer.
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