It is my daily driver and has been with this setup for over 2 years.
The muffler dosent have anything to do with the emissions. At idol its got a slight rumble so when you pull up to the emissions place they wont give you any shit. I guess it all depends on your state laws.
I had a shop take out the old muffler and weld in the new pipe.
2002 - XLT, 4.0L, 4x4
3" BL, 295 Nitto Terra Grapplers
K&N FIPK, Dual exhaust