Holley 300-256 “Holley 300-256 Single Plane Race Intake Manifold, LS1, LS2, LS6” has been added to your cart. View cart Showing the single result Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Holley 300-256 Single Plane Race Intake Manifold, LS1, LS2, LS6 $525.00 Add to cart