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 × Edelbrock 71187 Performer RPM Carb Intake & MSD 60143 Box LS1 5.3 6.0L $895.90 Edelbrock 71187 Performer RPM Carb Intake & MSD 60143 Box LS1 5.3 6.0L quantity $895.90 × 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 $1,525.85 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 $1,525.85 Proceed to checkout