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Product ID: ConversionTurboPlate
3 Bolt to 4 Bolt conversion
3 Bolt to 4 Bolt conversion
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This is a GN1Performance "3 bolt to 4 bolt conversion plate" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item allows you to run a 3 bolt turbo with 4 bolt headers or vice versa.
 
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Price: $65.00

 
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