Buick Grand National
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2.5" powdercoated external wastegate downpipe. WILL NOT WORK ON STOCK EXHAUST HOUSINGS OR EXHAUST HOUSINGS WITHOUT A 2-BOLT 38MM WASTEGATE MOUNTING FLANGE.
Fits: Turbonetics Delta & Evo, Precision 39mm, Tial 38mm.
Cotton's aluminum vacuum block accepts SIX 1/8" NPT fittings for custom vacuum lines... comes with gasket and mounting hardware.
* Does not include fittings
Kit option includes:
12x straight 1/8" NPT fittings
20 ft of 5/32" hard vacuum line
We recommend an OEM graphite gasket for a stock block, unmachined block surface
WE OFFER THESE INDIVIDUALLY, SO BE SURE TO LIST QUANTITY NEEDED WHEN ORDERING
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Cottons Performance Center
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Jack Cotton's 8.90 @ 154MPH 1986 Buick