Grams Stainless Steel Longtube Headers with Catalytic Converter Delete Pipes and complete Installation Material for Camaro LS3 and L99

These longtube headers come with catalytic converter replacement pipes and can easily be converted to high performance catalytic converters.
Grams longtube headers are designed and manufactured to increase engine power and torque across the entire power band (30+ hp and above).

Delivery includes:

• TIG welded stainless steel header elbows
• Catalytic converter pipes
• Manifold gaskets
• O2 Sensor Extension Harness
• Lambda sensor spacers to avoid error codes P0420 and P0430