1978-1987 Chevelle/Monte Carlo/Olds Cutlass/Pontiac Grand Prix/LeMans: 283-400, Tube Size 1.625", Collector Size 3"
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Ceramic Headers
- Rust And Corrosion Resistance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
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