FAST 146102B LSXR 102mm Intake Manifold - LS3, L99, L92, L76Fits GM LS3 L76 L92 L98 L99 V8 Car Intake port seals (Part #146003 8) are not included with the manifolds by FAST. Constructed from the same advanced polymer material as the LSX 92mm Intake Manifold, the LSXr offers a host of benefits over aluminum aftermarket intakes, including lighter weight, increased strength and improved heat dissipating characteristics. While the LSXr features a 102mm air inlet that is perfectly suited to the FAST Big Mouth