I installed this Flowmaster 2-intake single clutch behind an already installed cold air intake, short elbows, crampons and resonators. The double inlet acts like an X-pipe. This Series 70 isn't as quiet as the limited works clutch, but it's much quieter than the Series 50 Flowmaster it replaced. I like the solid construction of the Flowmaster compared to Magnaflow offerings. I regularly drive certain roads that pull loads and have found that the Tacoma V6 now has a noticeable horsepower boost as well as MPG improvements. If you don't want to jump out of the cab over muffler noise on long drives, the 70 Series could be the solution you're looking for.