ok i was driving to work this morning and went to floor it and it sounds like theirs a piece of a my cat or a rock in my muffler wat th hell man i just had the exhaust rewelded with the parts durangos cat on it it only had 98000 on its dash

 

The mufler or the piping may be hitting the underside of your vehicle if it is a 'thud' sound,
FF

 

no its getting louder almost sounds like my flywheel is loose ''clankity clank but really loud''

 

Could be a rock in the bell housing.

 

how am i supposed to get it out