So me and a friend decided to unbolt my flex pipe from the downpipe I believe it's called? Any way I though it sounded great so I left that for a few days. WHile unbolting the clamps the bolts broke and I was wondering what size they were. Also how much should it be for a shop to chop off the resonator and the muffler and replace with piping and throw some tips on? What size piping should I get?