What is the best sounding/ performing muffler for the 2.5 equipped Jeep YJ/TJ? I put a 2.25 Super Turbo on my brother in law's 94 YJ. It sounded good, not too loud, with good power on take off.It also seemed to run real clean through the gears as well.I also heard that a Borla would sound sweet and with it being stainless that would be pretty helpful up here in the rustbelt. Another question is what size pipe is best for good exhaust velocity? I think the 2.25" pipe would be optimal for the 2.5 4 cyl?