Grams stainless steel manifold with cat replacement pipes and complete installation material for the Camaro LS3 and L99

These manifolds are supplied with cat replacement pipes and can easily be converted to high-performance catalytic converters.
The Grams manifolds are designed and manufactured to increase engine power and torque across the entire powerband (30+ hp and more).

Delivery includes:

• TIG-welded fan bends made of stainless steel
• Cat replacement pipes
• Manifold gaskets
• Lambda sensor extension cable
• Lambda sensor spacers to avoid error codes P0420 and P0430