REMFLEX EXHAUST MANIFOLD GASKETS GM V8 SBC L31 VORTEC 96 - 02 # REM2011REMFLEX EXHAUST MANIFOLD GASKETS GM V8 SBC L31 VORTEC 96 02 # REM2011 GM V8, 262, 265, 267, 283, 302, 305, 307, 327, 350, 400, "L31" Vortec Cylinder Head, 1 3 8" x 1 1 2" Raised Sq Port Style: Square port Gasket Material: Graphite Port Height (in): 1. 500 in. Port Width (in): 1. 375 in. Thickness (in): 0. 125 in. Quantity: Sold as a pair. Notes: Designed for L31 Vortec style cylinder heads. Remflex exhaust header gasket sets feature 100 percent