This is a "CNC PORTED STOCK INTAKE MANIFOLD" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. 

 This item is sold on a exchange basis ONLY. Customer must ship me their old manifold and if the core is in proper condition we will ship you out a new manifold. Customer is responsible for shipping the old manifold.