The 2nd gen manifold swap is a popular upgrade for many cars and trucks. It involves replacing the stock exhaust manifold with one from a newer, more efficient model. The purpose of this swap is to improve power output, reduce backpressure and provide better fuel efficiency. By doing this you can increase horsepower by as much as 30%, all while cutting down on emissions. Additionally, some aftermarket manifolds are constructed from lighter yet stronger materials, so they help lower weight and free up extra space under the hood for other modifications or components. The biggest benefit however comes in terms of sound: swapping out your old exhaust manifold means less noise pollution and improved overall engine performance due to improved air flow dynamics. Ultimately, if you’re looking to create a powerful car or truck that is both fast and efficient then performing a 2nd gen manifold swap should definitely be something to consider!