FRPP Dual mode mufflers/exhaust
People will preach straight though = performance ....not so true, while you will get better power on the high end your low end torque will suffer.....greatly...as i had the full magna flow 3 inch system and i was quite happy with it on the high end it left something to be desired down low....if you're willing to spend the $$$ overall the best exhaust i've seen and now use is the ford performance dual mode system these mufflers have a valve inside of them that gives you the necessary restriction for throwing people into the seats at low end, and open wide for incredibly good topend power.....you should look into these as they were used on the infamous fr500 project (One of the most versatile and wicked cars built by ford for under 50k)