.060" or .125" thick gaskets (no end seal), Thicker 1/8" gaskets designed for milled heads/intakes, No end seals - use silicone gasket maker, Heat crossover port is blocked, Compare to Fel-Pro.
Speedway SBC Small Block Chevy 305 327 350 400 Intake Gasket Set, 1204 Style
Edelbrock Intake Gasket Set 7386; LS Intake Gasket Set for 1997-2009 Chevy LS
Mr Gasket Intake Gasket Set 5834; Ultra-Seal 2.11 x 1.25 in. for SBF
Mr Gasket Intake Gasket Set 121; Performance Composite, 2.55 x 1.85 in. for BBC
Mr Gasket Intake Gasket Set 108; Performance 2.5 x 1.75 in. Rect Port for BBC
Mr Gasket Intake Gasket Set 5818; Ultra-Seal, Rectangle 2.5 x 1.75 in. for BBC