Cart “Holley 300-121 LS1/LS2 Dual-Quad Intake Manifold EFI” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × L92 Cylinder Head Assembly $681.11 L92 Cylinder Head Assembly quantity $681.11 × Holley 300-121 LS1/LS2 Dual-Quad Intake Manifold EFI $629.95 Holley 300-121 LS1/LS2 Dual-Quad Intake Manifold EFI quantity $629.95 Coupon: Apply Sales Code Update cart Cart totals Subtotal $1,311.06 Shipping Enter your address to view shipping options. Calculate shipping Country / region Select a country / region… United States (US) State / County City: Postcode / ZIP: Update Tax $0.00 Total $1,311.06 Proceed to checkout