Good morning ! Probably an old subject but i need to repair the broken off tailpipe to muffler flange asap to pass an inspection . I found a pic 54Warrior posted about 5 yrs a go where he used an adapter pipe and two clamps to make the repair . My question is what is the I.D. size of this pipe ? Is it 3'' I.D. X 3'' I.D. or is the muffler side smaller ?