any of you guys running this muffler with the cat with your G56 truck? i talked to paul(betterthenstock) and he said in the reverse flow direction it wont be obnoxious like the 48 inch walker i have now at highway speeds. i made the mistake of having the dealer switch my exhaust from my 04. 5 to my megacab the walker isnt bad till you get in the 2000-2500rpm range. no drone though! i find myself taking the wifes jeep on the longer trips! ... . james 
