Glad to hear mufflex got you the right number. Hopefully Antony still works there. He has done all the work on my car and my Dad's old vette and both came out great.
I would only go with the cats if you were afraid of a mobile inspection and don't mind the smell. Regarding inspection, you could just have the outer casing welded to the pipe.
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97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140
'24 Corvette Z06
'17 Sierra 2500HD Dmax
'17 Lex LS460
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