Polished Aluminum Turbo 6 Cover with 6 Logo This is a GN1Performance "ALUMINUM STOCK STYLE TURBO 6 COVER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8. This beautiful aluminum turbo cover features a brilliant polished finish and... MSRP: Was: Now: $199.00 Add to Cart