Application: Intake manifold adapter is compatible with cathedral port heads and will adapt to rectangle port intakes, supercharger or blower. Aluminum Material: Manifold adapter plate is made of premium aviation aluminium material, anti rust, wearproof, sturdy and durable. Package Contents: The package includes 2pcs rectangle port intake manifold adapters, 10pcs bolts, 10 pcs washers and 8pcs rubber rings. High Performance: 70mm bolts with sealing washers for use with an LSA supercharger, high performance, strong reliability. Suggestions: Car intake manifold (M6 x 130mm) use ICT part, BOLTM6 130X10; Truck intake manifold (M6 x 90mm) use ICT part, BOLTM6 90X10. Item Type: Intake Manifold Adapter Material: Aviation aluminum. 70mm/2.8in Car Intake Manifold (M6 x 130mm) Use ICT Part: BOLTM6 130X10 Truck Intake Manifold (M6 x 90mm) Use ICT Part: BOLTM6 90X10 Application: Compatible with any Cathedral Port Heads and will adapt to any rectangle port intakes, supercharger or blower. Will not fit raised port LS7 intakes. 2 x Intake Manifold Adapter. 8 x Rubber Ring. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.