ICT Billet 551317 - LS Rectangle Port Cylinder Head to Cathedral Intake Adapters

Rectangle Port Cylinder Head toCathedral Port Intake Can ONLY be used with LS rectangle port cylinder heads Will not fit raised port LS7 cylinder heads Compatible with ANY rectangle port head and bolts to ANYcathedral port intake manifold, supercharger or blower Package Includes: 2 adapter plates (1/2" thick) with 8 O-ring seals Made in Wichita, Kansas from aerospace grade, USA produced, billet aluminum Intake manifold bolt lengths required when used with Factory GM LSA supercharger(M6 x 70mm) use ICT part # 551400 Car intake manifold(M6 x 130mm) use ICT part # BOLTM6-130X10 Truck intake manifold(M6 x 90mm) use ICT part #BOLTM6-90X10 See our other listing for reverse adapters