Cathedral Port Cylinder Head to Rectangle Port Intake Adapter <br />  Can ONLY be used with Cathedral Port Cylinder Heads <ul> <li>Fits: ANY Cathedral Port Heads and will adapter to ANY rectangle port intakes, supercharger or blower.</li> <li>Will not fit raised port LS7 intakes</li> </ul> <ul> <li>Package Includes: 2 adapter plates (1/2" thick) with 8 O-ring seals</li> <li>Made in Wichita, KS from 6061-T6, USA billet aluminum</li> </ul> <br /> <br /> <br /> Intake manifold bolt lengths required when used with <li>Factory GM supercharger (M6 x 70mm) use ICT part # 551400 </li> <li>Car intake manifold (M6 x 130mm)  use ICT part # BOLTM6-130X10</li> <li>Truck intake manifold (M6 x 90mm)  use ICT part # BOLTM6-90X10</li> See our other listing for reverse adapters <br /> <br />   <br />