The 70 Series Big Block Muffler features a longer case for increased volume and superior sound reduction, fitting applications where the wider 50 Series Big Block won't. Utilizing Flowmaster’s Delta Flow Technology, it provides maximum efficiency and minimal interior resonance. Ideal for street cars, trucks, SUVs, RVs, and tow vehicles, the 70 Series offers quiet operation with improved sound, making it perfect for those seeking performance with reduced noise.