spintech exhaust
#2
I have a two in and two out muffler from Spintech. It sounds real nice. I also used the "X" pipe from them. I got an increase in mileage and torque. As far as the price you need to contact them. http://www.spintechmufflers.com Mine was the first one done on a 2000 Expedition with 5.4L. I am very happy with mine.